Extending the School Year A researcher surveyed 100 randomly selected teachers in a large school district and found that 47 wanted to extend the school year, 40 did not, and 13 had no opinion. At the 0.01 level of significance, is the distribution different from the national distribution where 48% wished to extend the school year, 47% did not want the school year extended, and 5% had no opinion? Use the critical value method with tables. Part 1 of 5 Identify the claim with the correct hypothesis. Ho: The distribution is the same as the national distribution. Not claim H₁: The distribution differs from the national distribution. Claim Part: 1/5 Part 2 of 5 Find the critical value. Round the answer to at least three decimal places. The critical value is X S ▼

State H0 and what is H1 for all of them a, b and c a) The marketing researcher would like to find out whether consumers from different regions evaluate brand A differently when they see the brand name b) The marketing researcher would like to find out whether consumers from the south region and the north region evaluate brand B differently when they see the brand name c. The data file contains four taste evaluations. The taste evaluations were measured on a scale from 1 to 10 (with 10 the highest evaluation). Brand equity of one brand for one respondent is the difference of branded score and unbranded score of that brand evaluated by the respondent. The marketing researcher would like to find out whether brands A and B have brand equity, in other words, whether the evaluation of brand A (B) is different when consumers can see the brand name vs. when they cannot see the brand name.

The brand manager for a brand of toothpaste must plan a campaign designed to increase brand recognition. He wants to first determine the percentage of adults who have heard of the brand. How many adults must he survey in order to be 95​% confident that his estimate is within five percentage points of the true population​ percentage? Complete parts​ (a) through​ (c) below.       Question content area bottom Part 1 ​a) Assume that nothing is known about the percentage of adults who have heard of the brand.   n=enter your response here ​(Round up to the nearest​ integer.)

C2. Using the information listed below, explore the educational attainment of GSS 2018 respondents. Frequencies and percentages are reported by sex of respondent. a. Calculate the IQR for both groups. What do the IQRS reveal about the degree of diversity for males and females? b. What is the limitation to applying IQR to ordinal data? Highest Educational Degree Males Females Less than high school 63 80 12.9% 12.7% High school graduate 256 296 52.5% 47.1% Junior college 30 72 6.1% 11.4% Bachelor's degree 90 111 18.4% 17.6% Graduate degree 49 70 10% 11.1% 488 629 Total 100% 100% CHAPTER 4 MEASURES C

Net Worth. The Board of Governors of the Federal Reserve System publishes information on family net worth in the Survey of Consumer Finances. In 2010, the mean net worth of families in the United States was $498.8 thousand and the median net worth was $77.3 thousand. Which measure of center do you think is more appropriate? Explain your answer.