As a psychiatrist you developed a test to measure happiness. Test the claim that the mean measure of happiness for females is equal to the mean measure of happiness for males. Use a significance level of .10. The data is given below. (although you could label group 1 to be male or female and get the same answer at the end, the middle would vary a little. So to match with me call group 1 females) (3 decimals) females males. 9.6 7.6 8.9 6.7 9.6 6.3 5.8 7.1 9.4 6.1 7.3 C: μ1=μ2 Ho: HA;μ1*µ2 [Select] 6.9 8.4 7.9 9.7 [Select] P=[Select] [Select] 8.8 7.8 Pis [Select] The data [Select] Critical value/s is [Select] + + =-1.849 + + (although you are rounding to 3 decimals this one ends up with only 2) + the claim. +

Researchers wondered whether the size of a person's brain was related to the individual's mental capacity. They selected a sample of 5 females and 5 males and measured their MRI image pixel counts and IQ scores. Females Males MRI IQ MRI IG The data is reported to the right. Complete parts (a) through (d) below 139 858,472 140 955,003 935,494 924,059 1.079.550 1,001.121 Click the icon to view the critical values table. 991,305 138 141 857,782 833,868 790,619 133 135 132 141 135 140 AMRI 1,080,000- AIO 145 AIO 145- AMRI 1,080,000 780,000 130 130 780,000 130 780,000 780,000 130 1,080,000 145 1,080,000 MRI 145 MRI (b) Compute the linear correlation coefficient between MRI count and IQ. Are MRI count and IQ linearly related? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. (Round to three decimal places as needed.) A. Yes, MRI count and IQ are linearly related since the linear correlation coefficient is O B. No. MRI count and IQ are not…

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A class of students took a test. The instructor said that the 75th percentile score was 90 out of 100. What does this mean? A. 90% of the students scored 75 or more on the test. B. 75% of the students scored 90 or more on the test. C. 25% of the students scored 90 or more on the test. D. The high score in the class was (.75)(90).

R A veterinarian recorded how many kittens were born in each litter. This data is summarized in the L histogram below. (Note: The last class actually represents "7 or more kittens," not just 7 kittens.) 14 12 10- 8- 6- 4 1 2 3 4 7 8 # of kittens What is the frequency of litters having at most 3 kittens? ans = Fe Ro 1 FEB 18 P. W MacBook Air 20 000 esc F5 F6 F2 F3 F4 F1 & ! @ 1 2 4 5 Q W R %24 # 3 6 2. Frequency

We are going to calculate the mean, median, and mode for two sets of data. Please show your answer to one decimal place if necessary. Here is the first data set. 68 71 38 27 51 47 40 66 38 97 69 a. what is the mean (T) of this data set? b. What is the median of this data set? c. What is the mode of this data set? Here is the second data set. 97 71 80 29 71 55 d. What is the mean (T) of this data set? e. What is the median of this data set? f. What is the mode of this data set? 44 76 68 56

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