Question

A large discount store wants to determine the average income of its shoppers. A researcher chooses...

  1. A large discount store wants to determine the average income of its shoppers. A researcher chooses 100 shoppers at random between the hours of 1 and 5 p.m. on Thursday. What sampling method is used?
Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A store wants to determine the average amount that a shopper spends in its store with...
A store wants to determine the average amount that a shopper spends in its store with an error of +/-$5 at 95% confidence. If previous analysis has shown that the standard deviation of past sales amounts is $25, how many shoppers do they need to sample? How many shoppers need to be sampled if they want 99%confidence?
A medical researcher wants to determine if the average hospital stay of patients that undergo a...
A medical researcher wants to determine if the average hospital stay of patients that undergo a certain procedure is different from 5.2 days. The hypotheses for this scenario are as follows: Null Hypothesis: μ = 5.2, Alternative Hypothesis: μ ≠ 5.2. If the researcher takes a random sample of patients and calculates a p-value of 0.0086 based on the data, what is the appropriate conclusion? Conclude at the 5% level of significance.
1) A researcher wants to estimate the average income of parents of high school students. He...
1) A researcher wants to estimate the average income of parents of high school students. He decides to survey a sample of 250 students who are visiting Harvard University. Is this a representative sample? Explain your answer. 2) According to a study, persistent poverty during the first 5 years of life leave children with IQs 7.1 lower at age 5 than children who suffer from no poverty during that period. Is this statistical study an observational study or a designed...
1.Mall security estimates that the average daily per-store theft is no more than $250, but wants...
1.Mall security estimates that the average daily per-store theft is no more than $250, but wants to determine the accuracy of this statistic. The company researcher takes a sample of 64 clerks and finds that =$252 and s = $10. a) Test at α = .05 b) Construct a 90% CIE of μ 2.A college wants to know the lower limit of a two-sided 80% confidence interval for SAT scores on the Math section (range equals 200 to 800). They...
A] this problem requires PhStat solution. A marketing researcher wants to estimate the mean amount spent...
A] this problem requires PhStat solution. A marketing researcher wants to estimate the mean amount spent ($) on Amazon.com by Amazon Prime member shoppers. Suppose a random sample of 100 Amazon Prime member shoppers who recently made a purchase on Amazon.com yielded a mean amount spent of $1,500 and a standard deviation of $200. 1. Using a 0.05 level of significance, state your decision. 2. Using the critical value approach, is there evidence that the population mean amount spent on...
The manager of the sportswear store credit department wants to determine if the average monthly balance...
The manager of the sportswear store credit department wants to determine if the average monthly balance of credit card holders is $ 75. An auditor selected from a random sample of 100 accounts and found that the average debt was $ 83.40 with a standard deviation for the sample of $ 23.65. Using a level of a = 0.05, should the auditor conclude that there is evidence of a. Is the average balance greater than $ 75? b. How does...
the moore's discount store chain issues its own credit card. the credit manager wants to find...
the moore's discount store chain issues its own credit card. the credit manager wants to find out whether the mean monthly unpaid balance is 430$. the credit manager decides to take a random sample of 5 unpaid card balances. they are as follows: 375$, 452$, 394$, 422$, 392$. assume original population of unpaid card balance is normal. compute 95% confidence interval for the true mean monthly unpaid credit balance.
A researcher wants to assess if there is a difference in the average age of onset...
A researcher wants to assess if there is a difference in the average age of onset of a type of kidney disease for men and women. Let the population 1 mean be the average age of onset for women and the population 2 mean be the average age of onset for men. A random sample of 27 women with the disease showed an average age of onset to be 81 years, with a sample standard deviation of 13.5 years. A...
Question 3) A convenience store chain wants to determine the relationship between the income of customers...
Question 3) A convenience store chain wants to determine the relationship between the income of customers and the frequency of visiting stores in the chain. To answer your client’s question, you would do a test of hypothesis. State the null and alternative hypotheses for this particular study. Which significance level alpha would you select? If both income and “frequency of store visits” were measured on ordinal scales, how would you analyze the relationship between these two variables? Set up an...
A medical researcher wants to determine if the average hospital stay after a certain procedure is...
A medical researcher wants to determine if the average hospital stay after a certain procedure is greater than 12.41 days. The hypotheses for this scenario are as follows: Null Hypothesis: μ ≤ 12.41, Alternative Hypothesis: μ > 12.41. If the researcher randomly samples 22 patients that underwent the procedure and determines their average hospital stay was 14.93 days with a standard deviation of 6.108 days, what is the test statistic and p-value of this test? Question 2 options: 1) Test...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT