Estimate: Customers =+ Temperature + Weekend +. Interpret the beta estimates. How many customers should the manager expect on a Sunday with a forecasted high temperature of 80 degrees? Interpret the weekend coefficient. Is it significant at the 5% level? How this affect the store’s staffing needs?

Kahuna's Credit Union conducted a survey as to how long customers claimed to wait in the checkout line until their turn. Let X = time in line. The table below displays the ordered real data (in minutes): 0.50 4.25 5 6 7.25 1.75 4.25 5.25 6 17.25 2 4.25 5.25 6.25 7.25 2.25 4.25 5.5 6.25 7.75 2.25 45 55 65 8 2.5 4.75 55 65 825 2.75 4.75 5.75 6.5 19.5 3.25 4.75 5.75 6.75 95 3.755 16 6.75 9.75 3.75 5 6 6.75 10.75 Calculate the sample mean and the sample standard deviation to the nearest hundreths.

Two companies report a 15% gain in online sales over the last year. Suppose Company Q had 25 online sales and Company Z had 150 online sales last year. Sam says that they have the same growth while Anna says that they do not.  Who is correct?  Justify your answer using absolute change and percent change.

The bar graph below shows the percentage of people having different views on college education. In 2000, 24% of adults viewed a college education as essential for success. For the period 2000 through 2010, the percentage viewing a college education as essential for success increased on average by approximately 2.5 each year. If this trend continues, by which year will 64% of all adults view a college education as essential for success? 64% of adults will view a college education as essential for success by the year Changing Attitudes Towards College 60- A college 50 educato is available for qualified students. is essential for SUccess. 으 404 30- 10-24% 49% 35% 31% 0- 2000 2010 2000 2010 Help Me Solve This Textbook Get More Help - Clear All Skill Builder Check Answer 9:55 PM 73°F 9/13/2021 P Type here to search backspace 24 4. 7. 6. E R K pause Percentage

During 2010, the sales of vinyl records were 114% of the previous year’s sales. Sales were 2.8 million in 2010. (Source: Rollingstone.com).If this trend continues, how many vinyl records will be sold in the 5th year? Let 2010 = year 1.

In 2000, 12.8% of vehicles sold were off-road vehicles. In 2010, that number decreased to 10.2%. Calculate and interpret the relative change in the number of off-road vehicles sold from 2000 to 2010.

Please answer a-d. Thanks

The average production cost for major movies is 67 million dollars and the standard deviation is 19 million dollars. Assume the production cost distribution is normal. Suppose that 35 randomly selected major movies are researched. Answer the following questions. Round all answers to 4 decimal places where possible. What is the distribution of XX? XX ~ N(,) What is the distribution of ¯xx¯? ¯xx¯ ~ N(,) For a single randomly selected movie, find the probability that this movie's production cost is between 68 and 74 million dollars.  For the group of 35 movies, find the probability that the average production cost is between 68 and 74 million dollars.  For part d), is the assumption of normal necessary? NoYes NOTE..... I DON'T UNDERSTAND WHY I HAVE TO RESUBMIT THIS QUESTION A 3RD TIME. I specifically said (d or #4 is incorrect.) .......... For the group of 35 movies, find the probability that the average production cost is between 68 and 74 million dollars.......... need the answer to…

A recent survey showed that 22.1 million adults have cut the cord on cable TV services, a 30% increase from the previous year. If this trend continues, how many millions of adults can be expected to cut the cord next year?  million adults

Complete the following statements. In general, % of the values in a data set lie at or below the median. % of the values in a data set lie at or below the third quartile (Q3). If a sample consists of 900 test scores, quartile (Q2). If a sample consists of 900 test scores, quartile (Q1). of them would be ot or below the second of them would be ot or above the first