11. The manager of a rent-a-car business want to know whether the true average numbers of cars rented a day is 25 with a standard deviation of 6.9 rentals. A random sample of 36 days was taken and found to have an average of 22.8 rentals. Test at 0.05 level of significance. Ho : Ha : Level of significance =

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A: The following information has been given: X¯=30 , n=10 , MSbetween =76MSwithin=22 , dfwithin 27 The…

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A: The following information has been given: X 20 15 95 30 100 40 10 90 120 39…

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A: Given that  Norman is performing a hypothesis test in which he rejects the null hypothesis H0. Level…

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A: Hypothesis : Null hypothesis : H0 : ρ = 0 , i.e. there is no relationships between the numbers of…

Q: Consider the following time series of returns for ABC stock and the S&P500 Index over 5 years. For…

A: Please find the explanation below. Thank you

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A: Given the scatter plot of Husbands and Wives. We need to answer, the trend and shape of this…

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A: Given: The 95% confidence interval of population mean is [ 64000 ,   86000]

Q: Which of these statements does not contain a statistical mistake? O a. A strong correlation between…

A: Correlation ranges from -1 to 1.

Q: Plot the data on a scatter diagram. Does it appear there is a relationship between atmospheric…

A: Given: Sample size, n=12 Day Temp Sales 1 79 147 2 76 143 3 78 147 4 84 168 5 90 206…

Q: The probability that a bottle of aspirin will have weight 593g or less i

A: We have given that Mean(µ) = 600Standard deviations (σ) = 6X ~ N (µ, σ )= N(600, 6)

Q: Marketing campaign A is tested in one regions and marketing campaign B is te in another one of the…

A: Given: Results from A yielded 1.10 times ordinary sales(p<0.05) Results from B yielded 1.05 times…

Q: Past record showed that the average final examination grade in Math 10 is 70 with the standard…

A: Given : sample size, n =100 sample mean, x̄ =71.8 population standard deviation,σ=8…

Q: 1.) Explain the decision making process by giving an example. 2.) What is your understanding of…

A: Decision Making: It is the process of making a decision or choice by analyzing the gathered…

Q: Critical Values of z Level of Confidence, c a=1-e 0.80 0.20 1.28 0.85 0.15 1.44 0.90 0.10 1.645 a/2…

A: Solution-: Prove that each given critical values of z are true, given its corresponding confidence…

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A:

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A: Obtain the sample size needed. The sample size needed is obtained below as follows : Obtain the…

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Q: 1. p = 0.35 sample size = 180 sample proportion = 0.40 %3D 2. p = 0.36 sample size = 250 sample…

A:

Q: During the first few weeks of the new television season, the evening news audience proportions were…

A: The answer is attached below,

Q: a.    If a null hypothesis is rejected with a significance level of 0.05, is it also rejected with a…

A: To be reject null hypothesis,  p value must be smaller than alpha.

Q: According to Census data, in 1960 the population of the U.S amounted to 151.3 million persons, and…

A: Given : In 1960 the population of the U.S was 151.3 million and 13.4% of them were living in the…

Q: What is meant by the term “90% confident” when constructing a confidence interval for a mean? If we…

A: Given : Confidence level = 90%

Q: Freshmen at public universities work 12.2 hours a week for pay, on average and the SD is 10.5 hours.…

A: Given Data : For Sample 1 x̄1 = 12.2 σ1 = 10.5 n1 = 900 For Sample 2 x̄2 =…

Q: Marketing campaign A is tested in one of six regions and marketing campaign B is tested in another…

A: Option B is correct. A is an inferior campaign method due to the p-value.

Q: A jury of 12 people is selected at random from a group of 16 men and 18 women. What is the…

A:

Q: faces of the two dice. Thus for example if a one and a five are rolled, x = 4, and if two sixes are…

A: Given, two dice are tossed. X~ difference in the no.of dots that appear on the top faces of the two…

Q: Collect data from 15 of your classmates as shown below and answer the following problem. Show…

A: To test the hypothesis that the average number of siblings of all students in our respective section…

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A: Hypothesis testing is an inferential procedure to test the significant difference between population…

Q: In a spelling contest, the mean mark of the 32 boys was 72 with the standard deviation of 8 while…

A: Given Data : For Sample 1 x̄1 = 72 s1 = 8 n1 = 32 For Sample 2 x̄2 = 75…

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A: Given: A researcher is interested to test the  efficiency of administration for a new intelligence…

Q: A random sample of 450 adult is taken from a population of 15000. It is believed that 82% of the…

A:

Q: True or false 1. A negative odds ratio is an indication that exposure decreases the odds of disease.

A: Given that  True or false.. 1. A negative odds ratio is an indication that exposure decreases the…

Q: Provide a detailed and comparative account of the two tests of heteroskedasticity (the Breusch-Pagan…

A: Please find the explanation below. Thank you

Q: In the general population, height is normally distributed with a mean of 162.4 cm and a standard…

A: The population mean is μ=162.4. The population standard deviation is σ=11.1. The sample mean is…

Q: The mean of two samples of size 50 and 100 are 54.5 and 50.3. Calculate the com bined mean of the…

A: Given that , n1 =1st sample size=50 n2 =2nd sample size=100 x1 =1st sample mean=54.5 x2=2nd sample…

Q: A random sample of records of home sales from March 1 to July 1, 2010 from the files maintained by…

A: Regression equation

Q: One of the theories behind the large polling errors in 2016 election was the "shy Trump voter".…

A: Option D response bias is the answer.

Q: for coaching also usually raise their scores. A random sample of students who took the SAT twice…

A: Given data: Gain x¯ s n Coached 29 59 427 Uncoached 21 52 2733

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A:

Q: A researcher is wondering whether the drinking habits of adults in a certain region of a country are…

A: Are the conditions for one proportion z test  satisfied? If not, choosethe condition that is not…

Q: c= 0.90, o = 2.7, n= 36 Click the icon to view a table of common critical values. (Round to three…

A: Given C=0.90 Sigma=2.7  n=36

Q: This histogram shows the distribution of the numbers of siblings (brothers and sisters) for 2082…

A: Solution-: We want to identify the which choice is most likely to given histogram?

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Q: We are interested in determining whether or not illness is independent of smoking. a. State the…

A: Given : Illness Non-Smokers Smokers Totals Emphysema 20 50 70 Heart problem 70…

Q: The results of a recent study regarding smoking and three types of illness are shown in the…

A: The chi-square test of association is a non parametric test.

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A: Given Total number of employees 200

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A: Given Information: No. of observations=450Dependent variable=Level of Adoption(1-10 rating…

Q: (a) The random variable X has probability distribution 3 5 7 9. 11 P(X=x) 0.18 0.19 Q 0.2 (i) Given…

A: Solution-: We have following table: x 3 5 7 9 11 P(X=x) 0.18 P 0.19 Q 0.2 We want to find,…