Prof Rea’s Exam Q2 A study found that the mean height of adult American women is 64.5 inches with a standard deviation of 2.5 inches and that the mean height of adult American men is 70 inches with a standard deviation of 3 inches. Suppose we are interested in finding the differences in means from independent random samples of adult American women and men. Research has shown that the distributions of adult height is normal. We randomly survey 25 adult American women and 22 adult American men.  a. Let

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1. This assessment is enabling you to demonstrate your understanding of the concepts presented in unit 7, and section 8.1. Use techniques you have learned to solve the problems on the assessment. Points will be earned primarily through the process of solving. Therefore, you will show as much work as possible and will provide justification whenever necessary. Write your favorite color on the bottom of the first page for an extra point. Use models, tables, and/or write descriptively when providing explanations.  The solutions you provide should be of your own original thought. No collaboration/discussion with anyone is permitted or use of any computer system or server, is allowed. desmos graphing and scientific calculators are permitted on this assessment, but you will be required to show how you reached your answers (especially if the directions say “show the calculation to earn credit”). Please indicate which function in desmos you used to find probabilities and/or critical values and/or sample means/standard deviations. If I suspect any part of the work is not your own, you will earn a zero on  the assessment and the activity will be reported to the college to be formally processed and permanently recorded.  Sign your name on your work and answer template to acknowledge and agree to these terms. 

Upon treatment with heat or chemicals, bacteria will _______________________.

Prof Rea’s Exam Q7 Given below is a clickable scatterplot generated from data taken from 24 parents. What is the direction of the relationship?  

Exam Question 3 The systolic blood pressure (given in mm Hg) of males has an approximately normal distribution with mean µ = 125 and standard deviation σ = 13. Label the tick marks on the horizontal axis using what you know about the normal distribution and noting that the distance between each tick mark is 1 standard deviation. Adam says that . Describe three mistakes that Adam made. Then explain to him how to fix them. Identify the systolic BPs that encompass approximately 95% of all systolic BP’s of males. Explain why.

Prof Rea’s Exam Question 2. A restaurant is deciding which farm to order berries from for a seasonal dessert on their menu. The average cost for a pound of berries in California is $2.82 with a population standard deviation of $0.45. Assume that berry cost in California is normally distributed. Suppose that farms in California sell 10 different kinds of berries.  Explain why the sampling distribution of sample means is approximately normal.  Compute the mean,

Prof Rea’s Exam Question 2. A restaurant is deciding which farm to order lettuce from for a seasonal salad on their menu. The average cost for an assortment of 5 heads of lettuce in California is $7.69 with a population standard deviation of $0.18. Assume that lettuce cost in California is normally distributed. Suppose that farms in California sell 10 different kinds of lettuce. Explain why the sampling distribution of sample means is approximately normal.  Compute the mean,

Exam Question 3 The systolic blood pressure (given in mm Hg) of males has an approximately normal distribution with mean µ = 125 and standard deviation σ = 13. Label the tick marks on the horizontal axis using what you know about the normal distribution and noting that the distance between each tick mark is 1 standard deviation. Adam says that . Describe three mistakes that Adam made. Then explain to him how to fix them. Identify the systolic BPs that encompass approximately 95% of all systolic BP’s of males. Explain why.

Prof Rea’s Exam Question 6. A scientist takes a swab for a patient to determine if they are sick with Strep. The scientist’s null hypothesis is given as follows:  : The patient has no indication that there is any bacteria present in the culture and can therefore be deemed healthy. Describe the type II error that could occur in context.