(a) the test statistic (b) the critical z score
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Q: Find the critical value(s) and rejection region(s) for the indicated t-test, level of significance…
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A: To calculate: Calculate my sample's Z score on the comparison distribution.
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- What is measured by the denominator of the z-score test statistic? a. the position of the sample mean relative to the critical region b. the boundaries for the critical region(s) c. the amount of error expected between the sample mean and hypothesized population mean d. the distance between the sample mean and hypothesized population meanThe 2006 Statistical Abstract of the United States reports on a survey that asked a national sample of 80,000 American households about pet ownership. Suppose (for now) that one-third of all American households own a pet cat. This survey found that 32.8% of the households sampled owned a pet cat. Is this number a parameter or a statistic? Calculate the Z-score of this sample proportion (0.328).A random sample of 15 families representing three different Scandinavian countries has been observed for the number of weekend trips they take per year. Are the differences significant (use p=.05, F(critical) = 3.88)? Use the five step model as a guide and write a sentence or two of interpretation for your results. Sweden Norway Denmark 10 11 7 9 10 5 4 5 2 2 2 0
- The t- statistic isA statistical program is recommended. The National Football League (NFL) records a variety of performance data for individuals and teams. To investigate the importance of passing on the percentage of games won by a team, the following data show the conference (Conf), average number of passing yards per attempt (Yds/Att), the number of interceptions thrown per attempt (Int/Att), and the percentage of games won (Win%) for a random sample of 16 NFL teams for one full season. Team Conf Yds/Att Int/Att Win% Arizona Cardinals NFC 6.5 0.042 50.0 Atlanta Falcons NFC 7.1 0.022 62.5 Carolina Panthers NFC 7.4 0.033 37.5 Cincinnati Bengals AFC 6.2 0.026 56.3 Detroit Lions NFC 7.2 0.024 62.5 Green Bay Packers NFC 8.9 0.014 93.8 Houstan Texans AFC 7.5 0.019 62.5 Indianapolis Colts AFC 5.6 0.026 12.5 Jacksonville Jaguars AFC 4.6 0.032 31.3 Minnesota Vikings NFC 5.8 0.033 18.8 New England Patriots AFC 8.3 0.020 81.3 New Orleans Saints NFC 8.1 0.021 81.3 Oakland Raiders AFC…A physical therapist wanted to know whether the mean step pulse of men was less than the mean step pulse of women. She randomly selected 54 men and 70 women to participate in the study. Each subject was required to step up and down a 6-inch platform. The pulse of each subject was then recorded. The following results were obtained. Two sample T for Men vs Women N Mean StDev SE Mean Men Women 98% CI for mu Men - mu Women (- 12.20, - 1.00) T-Test mu Men = mu Women (vs H2 O C. Ho: H1 = H2; Ha: H1 #H2 (b) Identify the P-value and state the researcher's conclusion if the level of significance was a = 0.01. What is the P-value? P-value =
- In an advertising campaign, a snack company claimed that every 18-ounce bag of its cookies contained at least 1000 chocolate chips. Two statisticians attempted to verify the claim. The accompanying data represent the number of chips in an 18-ounce bag of the company's cookies based on their study. Complete parts (a) through (e). Click here to view the chocolate chip data table. Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). Chocolate Chip Data Table 1216 1216 1218 1267 1274 1278 1289 1290 1298 1310 1327 1092 1094 1151 1348 1169 1356 1106 1181 1358 1124 1127 1135 1136 1143 1190 1231 1378 1195 1205 1210 1215 1241 1243 1246 1253 1402 1415 1440 1516 Print DoneA sample of eight math SAT scores is given below: 600530560700630640580680600530560700630640580680 Find the first and third quartiles and the interquartile range for this sample. First Quartile = Third Quartile = Interquartile Range =Find the critical value(s) and rejection region(s) for the indicated t-test, level of significance alpha , and sample size n. Left -tailed test, alpha equals0.01 , nequals 10 LOADING... Click the icon to view the t-distribution table. The critical value(s) is/are nothing . (Round to the nearest thousandth as needed. Use a comma to separate answers as needed.) Determine the rejection region(s). Select the correct choice below and fill in the answer box(es) within your choice. (Round to the nearest thousandth as needed.) A. tless than nothing and tgreater than nothing B. tgreater than nothing C. tless than nothing D. nothing less thantless thannothing
- BONUS: Explain (with examples if possible) the relationship between the p-value, alpha, your obtained statistic and your critical value.The parameters of my population distribution are: µ = 20 and σ = 5. The parameters of my sample are: Mean = 24 and n = 25. Calculate my sample's Z score on the comparison distribution.Below indicate whether the appropriate test would be an independent t-test, dependent t-test, One-way ANOVA, or z-test. A researcher wants to know if people find baby animals cuter than adult animals. All of the participants in a study are shown 10 pictures of baby animals and 10 pictures of adult animals. They are asked to rate (on a 1 to 10 scale) how cute they think each animal is.
