2. The sets below represent test scores for two students in Mrs. Silvio's trigonometry class. Michelle: {71, 68, 84, 88} Valerie: {78, 82, 76, 80} Which statement correctly describes the relationship between the two students' test scores? 1) Michelle's mean test score is greater and her test scores have a greater interquartile range. 2) Michelle's population standard deviation is greater, but her range is smaller. 3) Valerie's mean test score is greater and her interquartile range is greater. 4) Valerie's mean test score is greater, but her population standard deviation is smaller. 3

ONLY SOLVE D AND E PLEASE

You are given the following set of observations:  41, 29, 38, 19, 22, 34, 50, 42, 40, 44.  What is the value of the IQR?

Q.2) A manager at the delivery company recorded the mean and median delivery cost, but unfortunately lost the paper on which the values were recorded. However, the manager can remember that one value was about $4.00 and the other was about $4.40. Which value is the mean and which is the median? i. $4.00 is the mean and $4.40 is the median. ii. ii. $4.40 is the mean and $4.00 is the median. iii. It's impossible to tell which is which. 111. Q.3) Which of the following sets of four numbers has the largest standard deviation? (а) 100, 101, 102, 103 (b) 7, 8, 9, 10 (с) 5, 5, 5, 5 (d) 0, 1, 2, 3 (e) 0, 0, 10, 10

A researcher is interested in determining if there is a relationship between handedness and penmanship.  To study this question, the researcher submitted samples from 100 students to penmanship experts.  The samples were rated to be of low, medium or high penmanship quality.  The observed frequencies were totaled according to left verses right handedness.     Penmanship Handedness low medium high Left 8 29 6 right 9 37 11   Which test is appropriate for this data? Why? Calculate row, column and table totals. State the null and alternative hypothesis. What is the degree of freedom? What is the value of the test statistic? What is the p-value? Are the data statistically significant at the 5% significance level? Do you recognize any flaws in this study