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4. According to Fidelity Investments, the average 401k account balance is over $80,000 last year. To...
4 points Problem 25) For a project that investigates the average weight difference by gender of...
4 points Problem 25) For a project that investigates the average weight difference by gender of patients from the Mayo clinic the researcher collected a sample of 64 male patients and another sample of 36 female patients. The researcher then calculated the sample mean of male patients as 160 lbs with a sample standard deviation of 20 lbs, and the sample mean of female patients as 140 lbs with a sample standard deviation of 10 lbs. Test the claim that...
QUESTION 25 4 poin Problem 25) For a project that investigates the average weight difference by...
QUESTION 25 4 poin Problem 25) For a project that investigates the average weight difference by gender of patients from the Mayo clinic the researcher collected a sample of 64 male patients and another sample of 36 female patients. The researcher then calculated the sample mean of male patients as 160 lbs with a sample standard deviation of 20 lbs, and the sample mean of female patients as 140 lbs with a sample standard deviation of 10 lbs. Test the...
1. A. According to Fidelity Investments, through last month, the majority of companies reporting profits had...
1. A. According to Fidelity Investments, through last month, the majority of companies reporting profits had beaten estimates. A sample of 160 companies showed that 96 beat estimates, 38 matched estimates, and 26 fell short of estimates. Using this information, how large a sample is needed to estimate the true proportion of all companies that had beaten estimates if you want to be 97% certain of being within 2% of the true proportion? Answer: n = B. Customers arrive at...
A sample of 36 account balances of a credit company showed an average balance of $1,179...
A sample of 36 account balances of a credit company showed an average balance of $1,179 and a standard deviation of $136. You want to determine if the mean of all account balances is significantly greater than $1,150. Use a 0.05 level of significance. Assume the population of account balances is normally distributed. Compute the test statistic. A sample of 30 account balances of a credit company showed an average balance of $1,165 and a standard deviation of $125. You...
According to a magazine, people read an average of more than three books in a month....
According to a magazine, people read an average of more than three books in a month. A survey of 30 random individuals found that the mean number of books they read was 3.2 with a standard deviation of 1.26. a. To test the magazine's claim, what should the appropriate hypotheses be? b. Compute the test statistic. c. Using a level of significance of 0.05, what is the critical value? d. Find the p-value for the test. e. What is your...
The owner of a football team claims that the average attendance at games is over 561,...
The owner of a football team claims that the average attendance at games is over 561, and he is therefore justified in moving the team to a city with a larger that a hypothesis test of the claim has been conducted and that the conclusion is failure toC)There is not sufficient evidence to support the claim that the mean attendance is greater than 561. reject the null hypothesis, state the conclusion in nontechnical terms. SELECT ALL APPLICABLE CHOICES A) There...
A Casper area realtor claims that her clients buy homes for an average of over $5000...
A Casper area realtor claims that her clients buy homes for an average of over $5000 below the asking price. Looking at a sample of 40 of her previous home sales, you see that her clients paid an average of $5717 below the asking price, with a standard deviation of $2312. You want to conduct a hypothesis test to determine if that is enough evidence to support her claim at the 0.05 significance level. What is the probability that we...
9.55 According to the Organization for Economic Cooperation and Development (OECD), the weekly hours worked in...
9.55 According to the Organization for Economic Cooperation and Development (OECD), the weekly hours worked in manufacturing in the United States was 42 hours in 2017. A recent random sample of 60 manufacturing workers in the United States was selected, and it was found that they worked an average of 38.6 hours last week with a sample standard deviation of 10.4 hours. a. Using alpha=0.05, is there enough evidence from this sample to conclude that the average number of hours...
A manufacturer of light bulbs advertises that, on average, its long-life bulb will last more than...
A manufacturer of light bulbs advertises that, on average, its long-life bulb will last more than 5500hours. To test this claim, a statistician took a random sample of 90 bulbs and measured the amount of time until each bulb burned out. The mean lifetime of the sample of bulbs is 5551 hours and has a standard deviation of 420 hours. Can we conclude with 99% confidence that the claim is true? Fill in the requested information below. (a) The value...
Consumers Energy states that the average electric bill across the state is $123.29. You want to...
Consumers Energy states that the average electric bill across the state is $123.29. You want to test the claim that the average bill amount is actually different from $123.29. The hypotheses for this situation are as follows: Null Hypothesis: μ = 123.29, Alternative Hypothesis: μ ≠ 123.29. You complete a randomized survey throughout the state and perform a one-sample hypothesis test for the mean, which results in a p-value of 0.3178. What is the appropriate conclusion? Conclude at the 5%...
4 points Problem 25) For a project that investigates the average weight difference by gender of patients from the Mayo clinic the researcher collected a sample of 64 male patients and another sample of 36 female patients. The researcher then calculated the sample mean of male patients as 160 lbs with a sample standard deviation of 20 lbs, and the sample mean of female patients as 140 lbs with a sample standard deviation of 10 lbs. Test the claim that...
QUESTION 25 4 poin Problem 25) For a project that investigates the average weight difference by gender of patients from the Mayo clinic the researcher collected a sample of 64 male patients and another sample of 36 female patients. The researcher then calculated the sample mean of male patients as 160 lbs with a sample standard deviation of 20 lbs, and the sample mean of female patients as 140 lbs with a sample standard deviation of 10 lbs. Test the...
The owner of a football team claims that the average attendance at games is over 561, and he is therefore justified in moving the team to a city with a larger that a hypothesis test of the claim has been conducted and that the conclusion is failure toC)There is not sufficient evidence to support the claim that the mean attendance is greater than 561. reject the null hypothesis, state the conclusion in nontechnical terms. SELECT ALL APPLICABLE CHOICES A) There...
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