Que The data below represent the number of days absent, x, and the final grade, y, for a sample of college students at a large university. Complete parts (a) through (e) below. No. of absences, x Final grade, y 1 2 3 4 5 6 7 88.8 85.9 83.0 80.6 77.7 73.3 63.5 68.3 65.4 62.6 (a) Find the least-squares regression line treating the number of absences, x, as the explanatory variable and the final grade, y, as the response variable. (Round to three decimal places as needed.)

pls solve fast 12.25 A farmer wants to test three brands of weight-gain diets for chickens to determine if the mean weight gain for each of these brands is the same. He selected 15 chickens and randomly put each of them on one of these three brands of diet. The following table lists the weights (in pounds) gained by these chickens after a period of 1 month. Brand A Brand B Brand C .8 .6 1.2 1.3 1.3 .8 1.7 .6 .7 .9 .4 .6 .7 1.5 9 a. At the 1% significance level, can you conclude that the mean weight gain for all chickens is the same for each of these three diets? b. If you did not reject the null hypothesis in part a, explain the Type II error that you may have made in this case. Note that you cannot calculate the probability of committing a Type II error without additional information.

Waiting times (in minutes) of customers at 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 coefficient of variation for each of the two sets of data, then compare the variation. Bank A (single line): 6.4 6.7 6.7 6.8 7.1 7.3 7.3 7.6 7.7 7.7 o 4.3 5.3 5.9 6.3 6.7 7.6 7.8 8.5 9.3 9.8 Bank B (individual lines): The coefficient of variation for the waiting times at Bank A is %. (Round to one decimal place as needed.) The coefficient of variation for the waiting times at the Bank B is %. (Round to one decimal place as needed.) Is there a difference in variation between the two data sets? O A. There is no significant difference in the variations. O B. The waiting times at Bank B have considerably less variation than the waiting times at Bank A. O C. The waiting times at Bank A have considerably less variation than the waiting times at Bank B. Ans

Waiting times (in minutes) of customers at 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 coefficient of variation for each of the two sets of data, then compare the variation. Bank A (single line): 6.5 6.6 6.7 6.8 7.1 7.3 7.5 7.6 7.6 7.6 O Bank B (individual lines): 4.3 5.4 5.9 6.1 6.7 7.6 7.7 8.5 9.4 9.8 The coefficient of variation for the waiting times at Bank A is %. (Round to one decimal place as needed.) Get more help - Clear all Check answer 12:54 A 39°F Clear 3/28/20

The data below represent the number of days absent, x, and the final grade, y, for a sample of college students at a large university. Complete parts (a) through (e) below. No. of absences, x 4 5 6 7 8 0 1 2 3 9 Q 87.6 84.7 81.7 79.2 76.2 71.8 62.4 66.6 63.7 60.7 Final grade, y C (a) Find the least-squares regression line treating the number of absences, x, as the explanatory variable and the final grade, y, as the response variable. y=x+ (Round to three decimal places as needed.)

Events manager at the music label you work is interested in which type of concerts do people prefer to go to. You, a person with such keen insights, advise that people's conference preference surely depend on their age group. Your manager agrees, and employs you in randomly finding 15 young adults, 15 adults, and 15 later age adults. For each person you ask how many concerts they have been to in the last 2 years. The table shows the sample means. Sum of squares for relevant quantities are given. Conduct your test at alpha .01 and interpret your results in a lay language that everyone can understand. SSage 15 SSConcertType=56 SSwithin= 79 SSTotal = 245 18-25 Year Olds 40-65 Year Olds 25-40 Year Olds 2 |11 Rock, Punk, Pop Concerts 17 13 18 Classical, symphonic, or jazz concerts

Briefly explain what happens during the first stage of the two-factor ANOVA. During the first stage of the two-factor ANOVA the ______     is separated into two components:     _____ and_____     .   Briefly explain what happens during the second stage of the two-factor ANOVA. During the second stage of the two-factor ANOVA the mean differences      are analyzed into differences from+++ Briefly explain what happens during the first stage of the two-factor ANOVA. During the first stage of the two-factor ANOVA the      is separated into two components:      and     .   Briefly explain what happens during the second stage of the two-factor ANOVA. During the second stage of the two-factor ANOVA the mean differences      are analyzed into differences from      and differences from     . Briefly explain what happens during the first stage of the two-factor ANOVA. During the first stage of the two-factor ANOVA the      is separated into two components:      and…

Statistics students in Oxnard College sampled 11 textbooks in the Condor bookstore and recorded the number of pages in each textbook and its cost. The data are shown below: Number of Pages (r) Cost(y) 743 83.87 377 50.93 448 46.32 940 89.6 677 85.93 390 60.1 357 56.13 509 52.81 732 71.88 746 84.14 891 99.19 A student calculates a linear model using technology (Statistics Calculator or Computer) = (Please show your answers to two decimal places) Use the model to estimate the cost when number of pages is 950. Cost = S (Use the linear model with yor rounded coefficients and then round your answer t 2 decimal places.) Submit Question hp

70 abs 71 solve both plz

Statistics students in Oxnard College sampled 11 textbooks in the Condor bookstore and recorded the number of pages in each textbook and its cost. The data are shown below: Number of Pages (x ) Cost(y ) 866 36.3 418 22.9 783 52.15 562 26.1 290 15.5 708 43.4 357 15.85 316 27.8 614 30.7 384 15.2 239 5.95 A student calculates a linear model using technology (Statistics Calculator or Computer)ˆy = x + . (Please show your answers to two decimal places)Use the model to estimate the cost when number of pages is 536.Cost = $ (Use the linear model with yor rounded coefficients and then round your answer to 2 decimal places.)