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1. Write the null and alternate hypotheses for each claim.a) Medical doctors in Los Angeles work an average of 60 hours per week.
H0: H1:
b) The average cost of replacing auto braking devices is more than $127.
2. Calculate the test statistic for the claim in #1b, using the following information.Sample information: A random sample of 40 repairs has a sample mean price of $132.09 and a sample standard deviation of $13.58.
3. Claim: The average amount spent by shoppers at a suburban mall is less than $75.Sample information: A sample of 37 suburban shoppers had a mean expense of $59.10 with a sample standard deviation of $31.40.
Test the claim, using α = .05. State the null and alternate hypotheses, the type of test, the model, the TS, and the p-value. State whether or not you reject the null. State a conclusion about the original claim. Do you agree with it or not?
The payouts for the Powerball lottery and their corresponding odds arean probabilities of occurrence are shown below. The price of a ticket is $1.00. Find the mean and standard deviation of the payout.
The average salary for graduates entering the actuarial field is $40,000. If the salaries are normally distributed with a standard deviation of $5,000, find the probability that
A researcher wants to collect data about the study habits of sophomores at Harmond University. From the sophomore class of 2,300 students, she wants to collect a sample of 70 students. Which of the following sampling methods will yield the most re..
Given this, compute the following probabilities for demand during lead time(DDLT).
The goal is to get people thinking about how they can actually use correlation and regression in their real life, and where and how can they can really benefit from these techniques?
What percent of the SAT verbal scores are less than 675? If 1000 SAT verbal scores are randomly selected about how many would you expect to be greater than 575?
The following data represents the running time of films produced by 2 motion picture companies. Assume these are independent samples
Find out equation of the line of best fit. Find out r - Is there a strong relationship?
Can you explain to me how the null and alternative hypothesis for one-sample testing differs from two-sample testing; and explain how these two hypothesis' are the same. Please provide a numerical example:
How many students must we sample if we want to be within 4% of the true proportion of female students at DeVry University when using a 95% confidence interval?
Yielding a sample mean of 190.7 days and a sample standard deviation of 54.2 days. Estimate the true mean population of the growing season with 95% confidence.
3% from excise taxes and 5% other. If a revenue source is selected at random, what is the probability that it comes from individual or corporate income taxes?
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