A company claims that the mean monthly residential electricity consumption in a certain region is more than 860 kilowatt-hours (kWh). You want to test this claim. You find that a random sample of 70 residential customers has a mean monthly consumption of 880 kWh. Assume the population standard deviation is 130 kWh. At a = 0.01, can you support the claim? Complete parts (a) through (e). (a) Identify Ho and H₂. Choose the correct answer below. OA. Ho: μ>860 (claim) Ha:μ≤860 OC. Ho: μ≤880 Ha: > 880 (claim) OB. Ho: μ = 880 Ha: μ#880 (claim) O D. Ho: μ> 880 (claim) Ha:μ≤880

Q: Thanks to an initiative to recruit top students, an administrator at a college claims that this…

A: given data,claim: μ>110n=11x¯=112s=15α=0.05one- tailed test

Q: Jessica counts how many customers have come into her restaurant for the past 30 days.  The table…

A: frequency distribution

Q: QUESTION 13 You are interested in seeing whether emotions impact decision making. You have three…

A: The question is about ANOVA  Given : Sum of sq. between samples ( SSG )= 1.6 Sum of sq. within…

Q: What is the critical value for this hypothesis testing procedure if the level of significance is 5%?

A:

Q: From telephone interviews with 980 teenagers, it was found that 765 of those teenagers supported…

A: a) Suppose p is the population proportion of teenagers, who supported legalization of marihuana.

Q: Using 1% & 5% alphas, test the overall significance of the model.

A: There are 11 independent variables and one dependent variable. The problem is multiple regression.…

Q: How do you test for the presence of serial correlation using the Durbin-Watson Statistics, state all…

A: Please find the explanation below. Thank you.

Q: Same numbers as before, different question. A new test for onuriangiema has a 0.78 probability of…

A:

Q: uppose the age that children learn to walk is normally distributed with mean 13 months and standard…

A: given data, normal distribution μ=13σ=1.3n=16we have to find out the given probabilties

Q: Suppose you wish to find out the answer to the age-old question, "Do people prefer Cola 1 or Cola…

A:

Q: The first digits of legitimate records such as invoices and expense account claims often follow the…

A: Introduction: It is required to test if there is sufficient evidence to indicate that the first…

Q: Researchers interested in determining the relative effectiveness of two different drug treatments on…

A:

Q: A high school principal was concerned about the time his students were spending on home work in a…

A: given data, n=50x¯=18.50σ=10.2α=0.10claim :μ<20

Q: For part a), do we need to solve it with one-way anova or two-way anova?

A: It is required to test whether mean protopectin content is different for four different type of…

Q: Coca-Cola is producing 2-Liter bottles of Coke, Sprite, and Fanta. During bottling, each bottles…

A: Given information- Population mean, µ = 2 liters Population standard deviation, σ = 4 milliliters =…

Q: ccording to a 2006 survey conducted by the Center for Disease Control and Prevention (CDC), birth…

A: Solution: Given information: n= 1380 Sample size k= 12 Categories   because there 12 months from…

Q: The dating web site Oollama.com requires its users to create profiles based on a survey in which…

A: Given Information: Consider the given logistic regression model that generates the following…

Q: For the group of 35 movies, find the probability that the average production cost is between 68 and…

A: 4. The mean is 67, standard deviation is 19 and sample size is 35.

Q: Assume that the probability of the binomial random variable will be approximated using the normal…

A: Let X follows Binomial distribution. We have to compute the probability that X = 4 I.e P(X = 4).

Q: (a) A study of the effects of running on personality involved 231 male runners who each ran about 20…

A: In a double-blind trial, neither the volunteers nor the researchers are aware of who is getting a…

Q: what type of hypothesis test is this

A: We have the given correct hypothesis is  Ho: p1 = p2, Ha: p1 < p2

Q: The duration of video screen time on the iPhone 13 is normally distributed with a mean of 19 hours…

A: GivenMean(μ)=19standard deviation(σ)=1.25

Q: Managing Ashland MultiComm Services In its continuing study of the 3-For-All subscription…

A: week New Subscriptions Hours Presentation 1 1256 282 Formal 2 1405 336 Formal 3 1103 232…

Q: In a local store a produce manager needs to estimate the mean weight of Texas oranges delivered from…

A: given data n = 68x¯ = 154σ = 990% ci for μ = ?

Q: 38) The heights (in inches) of 20 randomly selected adult males are listed below. Test the claim…

A: Given The variance is less than 6.25 Sample size (n) =20 Enter the given data into Excel And…

Q: There are four brothers in a family.  Their ages are 7 years,10 years,15 years, and 21 years.…

A: From the provided information, Population size (n) = 4 The ages are 7 years,10 years,15 years, and…

Q: If n=310 and X = 248, to construct a 90% confidence interval, you need to use which one of the…

A: Given that n=310 and X=248. Here we want to construct a 90% confidence interval.

Q: Does it take more time for seeds to germinate if they are near rock music that is continuously…

A: According to the given information in this question There are more than three subparts according to…

Q: essica counts how many customers have come into her restaurant for the past 30 days.  The table…

A: The objective is to construct a histogram starting at 130 with a bin width of 5.

Q: Seventeen of the 50 digital video recorders (DVRs) in an inventory are known to be defective. What…

A: In question, Given that the seventeen out of 50 digital video recorder are defective. Then we'll…

Q: Assume that the following data represent baseball batting averages (multiplied by 1000) for a random…

A: Solution-: Make a frequency table showing class limits, class boundaries, midpoints and frequency.…

Q: Screen tension A manufacturer of high-resolution video terminals must control the tension on the…

A: From the given information, samples mean SD 300 306.673 7.734 Let α=0.05. α2=0.052=0.025…

Q: d) With the assumption in (c), perform a hypothesis test to see whether the mean LDL cholesterol…

A: Given: Control group: Sample size n1=17 Sample size x¯1=116 Sample standard deviation s1=18.1…

Q: Consumer Reports has decided to test the efficacy of 4 different ant sprays. They take ran 8 trials…

A: Given SStotal =30541.88 SSwithin =12010.5

Q: Several years ago, 41% of parents who had children in grades K-12 were satisfied with the quality of…

A: Followings are the Explanation of the question Use the One sample Z proportion t test and its…

Q: Test the claim about the difference between two population means μ₁ and μ2 at the level of…

A:

Q: Problem I) Given the random variable, Yhas the following CDF: Fy(y) 1 0.75 0.5 0.25 a) Find Pu(u).…

A: Problem 1) The CDF of Y is FY(y)=0y<10.251≤y<20.52≤y<31y≥3 From the graph of CDF of Y, we…

Q: what test should be our first choice? (A) Two sample z test​ (B) Two sample t test (C) Paired t…

A: It is given that the information of the concentration of suspended particles of two different city…

Q: Consider the hypotheses H₂p=101 versus H₁ > 101. Explain what the director is testing. Perform the…

A: From the information, the claim of the test in the alternative hypothesis is that the mean IQ score…

Q: Based on this information, answer each alternative. a. P(X< −0.39 or X≥0.74):  b. P(X≥−0.01): c.…

A: Given that  Continuous random variable X has density functions  f(x) = { 1/2 , -0.5 &lt; X &lt; 0.5…

Q: A binomial experiment with probability of success p = 0.88 and n = 6 trials is conducted. What is…

A: Given P=0.88 n=6

Q: 35) Test the claim that o<9.48 if n = 28, s = 7.48 and a = 0.10. Assume that the population is…

A: The null and alternative hypotheses are: H0:σ=9.48 H1:σ&lt;9.48

Q: To test Ho: μ=60 versus H₁ μ<60, a random sample of size n=22 is obtained from a population that is…

A:

Q: QUESTION 8 You are interested in seeing whether emotions impact decision making. You have three…

A: Given that  Number of treatment = k = 3 Number of observation = n = 5*3 = 15

Q: Charmaine has two ways to travel from her home in Norco to her office in Los Angeles. One is to go…

A: The question is about hypo. testing Given : Random sample of trips via S.B. freeway ( n1 ) = 12…

Q: From a sample of 18 tellers operating in different branches of a bank, it turned out that during a…

A: From the provided information, Sample size (n) = 18 Sample mean (x̄) = 60 Sample variance (s2) = 81

Q: Finish times (to the nearest hour) for 59 dogsled teams are shown below. Draw a relative-frequency…

A: There is total five classes.

Q: A researcher claims that a lesser proportion of construction companies in the eastern part use…

A: The given claim is that a lesser proportion of construction companies in the eastern part use…

Q: The data below show consumption of chicken and its real price at GIMPA Consumption (Y )   3…

A: viii) Regression Equation is, Y=0.2703+0.2546X The monthly consumption for a student with 10 Ghana…

Q: 4) Find a 90% confidence interval for the Women's Population Pre-med mean. Find a 90% confidence…

A: (a) The objective is to find a 90% confidence interval for the Women's Population Pre-med mean.…