years old. A linguist believes the average age children learn a second language is less than the age stated in the study. To test this claim, at the 2.5% significance level, the linguist collects the following data on a sample of 21 children learning a second language and records the age of when they started learning the second language.  The following is the data from this study:   Sample size =21 children Sample mean =9.2 years old Sample standard deviation =2.5 years old   Identify the null and alternative hypothesis for this study by filling in the blanks with the correct symbol (=,≠,<, or > to represent the correct hypothesis.) Provide your answer below:   null hypothesis :  $\mu$μ​   10 alternative hypothesis :  $\mu$μ​   10

You may need to use the appropriate technology to answer this question. Forty-minute workouts of one of the following activities three days a week will lead to a loss of weight. Suppose the following sample data show the number of calories burned during 40-minute workouts for three different activities Swimming Tennis Cycling 403 410 380 375 485 250 420 455 290 405 415 397 427 525 273 Do these data indicate differences in the amount of calories burned for the three activities? Use a 0.05 level of significance. State the null and alternative hypotheses. O H: Median, = Median, = Median. H: Medians + Median, + Median. O Ho: Median, + Median, + Median. H: Median, - Median, = Median. O H,: Not all populations of calories burned are identical. H: All populations of calories burned are identical. O Ho: All populations of calories burned are identical. H: Not all populations of calories burned are identical. O Hg: Mediang = Median, = Medianc H: Median, Median. Find the value of the test…

Male and female respondents to a questionnaire about gender differences are categorized into three groups. Group 1 Men Women 40 6 Group 2 48 54 Group 3 80 34

Good credit: The Fair Isaac Corporation (FICO) credit score is used by banks and other lenders to determine whether someone is a good credit risk. Scores range from 300 to 850, with a score of 720 or more indicating that a person is a very good credit risk. An economist wants to determine whether the mean FICO score is more than the cutoff of 720. She finds that a random sample of 40 people had a mean FICO score of 760 with a standerd deviation of 95, Can the economist conclude that the mean FICO score is greater than 720? Use the a=0.01 level of significance and the P-value method with the T1-B4 Plus calculator. Part 1 of 4 State the appropriate null and altemate hypotheses. H D-0 H: This hypothesis test is a (Choose one) test. left-tailed right-tailed two-tailed

A professor wants to know which type of instructional mode students had more satisfaction.  The professor randomly selected n = 5 students from each of the following types of classes: online only, hybrid, and face-to face only.  Student were given a satisfaction survey.  Are their differences in student satisfaction among the different instructional modes.  The data are below: Online Hybrid Face-to-Face 3 3 4 3 3 1 3 1 3 2 2 2 2 1 3 Calculate the Tukey HSD

In 2010, the Physicians Foundation conducted a survey of physicians' attitudes about health care reform, saying that the report was "a survey of 100,000 physicians." The survey was sent to 100,000 randomly selected physicians practicing in the United States: 40,000 via post-office mail and 60,000 via email. Assume that a total of 2311 completed surveys were received. O Macmillan Learning What population is sampled in this survey? The population is 100,000 randomly selected physicians practicing in the United States. The population is all physicians. O The population is 2311 physicians that completed surveys. O The population is all physicians practicing in the United States. What is the sample size for this survey? Give your answer as a whole number. n = Could you draw conclusions from this study about all

After looking at MLs, the researcher decides to look at the entire sample. In her analysis the researcher is interested in the relationship between party affiliation, gender, and religious importance. She measures party affiliation on a seven-point scale such that: 1-Strong Democrat; 2-Democrat; 3=Independent leaning Democrat; 4=Independent; 5=Independent leaning Republican; 6=Republican; 7=Strong Republican. Gender is measured as a dummy variable coded 1 if the respondent identifies as female and O if the respondent identifies as male. Religious importance is coded as before (1-important; O=unimportant). A regression model is estimated and the following results are obtained: Call: Im(formula = guncontrol ~ pid7 + sex + ri, data = therms) Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) 15.82 0.13 117.89 <0.0000000000000002 pid7 -1.02 0.03 sex 1.43 0.11 ri High -0.30 0.12 Note that "pid7" denotes the party affiliation measure; "sex" measures gender identification…

The CEO of a small company earns $400,000 per year, and the 10 employees each earn $50,000 per year. Which of the measures of central tendency of data ( shown below) is strongly affected by the CEO's salary? why? a) the mean b) the median c) the mode d) none of the above

Health insurance benefits vary by the size of the company. The sample data below show the number of companies providing health insurance for small, medium, and large companies. For purposes of this study, small companies are companies that have fewer than 100 employees. Medium-sized companies have 100 to 999 employees, and large companies have 1,000 or more employees. The questionnaire sent to 225 employees asked whether or not the employee had health insurance and then asked the employee to indicate the size of the company. Health Insurance Size of the Company Small Medium Large Yes 33 62 85 No 17 13 15 (a) Conduct a test of independence to determine whether health insurance coverage is independent of the size of the company. State the null and alternative hypotheses. H0: Having health insurance is not independent of the size of the company.Ha: The proportion of companies with health insurance benefits is not equal for small, medium and large companies.H0: Having…

he Computer Anxiety Rating Scale (CARS) measures an individual’s level of computer anxiety, on a scale from 20 (no anxiety) to 100 (highest level of anxiety). Researchers at Miami University administered CARS to 172 business students. One of the objectives of the study was to determine whether there are differences in the amount of computer anxiety experienced by students with different majors. They found the following: Major                  n           Mean   Marketing          19          44.37 Management     11          43.18 Other                 14          42.21 Finance             45          41.80 Accountancy     36          37.56 MIS                   47          32.21   (A) Complte the following ANOVA table: Source of Variation SS df MS F-ratio F-crit Between groups 3172 5  634.4  4.9567 2.2685 Within groups 21246 166  127.988     Total 24418 171       (A)  At the 0.05 level of significance, is there evidence of a difference in the mean computer anxiety…