Each of a sample of 176 residents selected from a small town is asked how much money he or she spent last week on state lottery tickets. 130 of the residents responded with $0. The mean expenditure for the remaining residents was $21. The largest expenditure was $210. Step 2 of 5: What is the median of the data?

A department-store manager is interested in the number of complaints received by the customer-service department about the quality of electrical products sold by the store. Records over a 5-week period show the following number of complaints for each week: 13  15  8  16  8 a. Compute the mean number of weekly complaints.b. Calculate the median number of weekly complaints. c. Find the mode.

2. A city had an unemployment rate of 7%. The mayor pledged to lower this figure and supported programs to decrease unemployment. A group of citizens wanted to test with 0.032 label of significance if the unemployment rate had actually decreased, so they obtained a random sample of 500 citizens to see what proportion of the sample was unemployed. Only 32 citizens in the above sample is still unemployed. What is the probability of Type II error if the actual unemployment rate is 6.5% please don't use software everything needs to be done by hand. Explain because I don't understand my professor. Note:- Do not provide handwritten solution. Maintain accuracy and quality in your answer. Take care of plagiarism. Answer completely. You will get up vote for sure.

What statistic does Richard Freeman say that if an economist had predicted it, he/she would have been carted away as mad?

Zip Code, Age and Number of Dogs by Person in Petland Person Zip Code Number Age of Dogs Ann 402 20 0 Bill 805 35 55 2 Carmelo 805 40 5 Dan 402 50 1 Eric 402 20 20 Ferdinand 402 35 55 3 3 Gert 402 20 2 Homer 402 20 0 In-choi 805 100 3 Jimmy 805 60 1

K The first statistics exam had a mean of 71 and a standard deviation of 15 points; the second had a mean of 82 and a standard deviation of 5 points. Anna scored a 84 on both tests. Megan scored 94 on the first exam and 74 on the second. They both totaled 168 points on the two exams, but Anna claims that her total is better. Explain. The total of Anna's z-scores is, which is greater than Megantotal of (Round to one decimal place as needed.)

8.

No chatgpt used i will give 5 upvotes typing please

Waiting times (in minutes) of customers in a bank where all customers enter a single waiting line and a bank where customers wait in individual lines at three different teller windows are listed below. Find the mean and median for each of the two samples, then compare the two sets of results. Single Line Individual Lines 6.4 4.3 6.6 5.5 6.7 5.8 minutes. 6.8 6.3 7.1 6.5 C 7.2 7.8 7.6 7.8 7.8 8.7 The mean waiting time for customers in a single line is The median waiting time for customers in a single line is The mean waiting time for customers in individual lines is minutes. minutes. minutes. The median waiting time for customers in individual lines is Determine whether there is a difference between the two data sets that is not apparent from a comparison of the measures of center. If so, what is it? O A. The times for customers in a single line are much more varied than the times for customers in individual lines. O B. The times for customers in individual lines are much more varied…

The days to maturity for a sample of five money market funds are shown here. The dollar amounts invested in the funds are provided. Days to Maturity Dollar Value ($ millions) 18 10 10 25 15 20 14 7 6 5 Use the weighted mean to determine the mean number of days to maturity for dollars invested in these five money market funds. Round your answer to 2 decimal places. days