13.A medical statistician wanted to examine the relationship between the amount ofsunshine (x) and incidence of skin cancer (y). As an experiment he found thenumber of skin cancers detected per 100,000 of population and the average dailysunshine in eight counties around the country. These data are shown below.Average Daily SunshineSkin Cancer per 100,000577 1167 8649 12 15 10 7Predict with 95% confidence the skin cancers per 100,000 in a county with a dailyaverage of 6.5 hours of sunshine.35

Average Daily sunshine (x) Skin Cancer per 100,000 (y) 5 7 7 11 6 9 7 12 8 15 6 10 4 7…

Answered: 13. A medical statistician wanted to…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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#25). Both photos are the same problem.
Help me please
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5.28 Risks and insurance. The idea of insurance is that we all face risks that are unlikely but carry high cost. Think of a fire destroying your home. So we form a group to share the risk: we all pay a small amount, and the insurance policy pays a large amount to those few of us whose homes burn down. An insurance company looks at the records for millions of homeowners and sees that the mean loss from fire in a year is μ = $250 per house and that the standard deviation of the loss is σ = $1000. (The distribution of losses is extremely right-skewed: most people have $0 loss, but a few have large losses.) The company plans to sell fire insurance for $250 plus enough to cover its costs and profit. If the company sells 25,000 policies, what is the approximate probability that the average loss in a year will be greater than $270?
3. A psychologist is studying the effects of lack of sleep on the performance of various perceptual-motor tasks. After a given period of sleep deprivation, a measurement of reaction time to an auditory stimulus was taken for each of 36 adult male subjects. The reaction times (in seconds) are summarized as follows: x = 1.82, s = 0.22 Previous psychological studies show that the true mean reaction time for non-sleep- deprived male subjects is 1.70 seconds. a. Does the sample evidence indicate that the mean reaction time for sleep- deprived male subjects is longer than that of non-sleep-deprived male subjects ? a = 0.05 (iv) The conclusion for the above problem is Do not reject the null hypothesis and mean reaction time for sleep-deprived male subjects is not longer than that of non-sleep-deprived male subjects Reject the null hypothesis and mean reaction time for sleep-deprived male subjects is longer than that of non-sleep-deprived male subjects Do not reject the null hypothesis and…
Employees of a local college have been classified according to gender and job type. Gender Job Male (M) Female (F) Faculty Member (FA) 25 15 Salaried Staff (SS) 20 30 Hourly Staff (HS) 35 15 Calculate the following: Construct three separate probability tables: (You will need to add the row/column totals as needed) Total probability Row probability Column probability If an employee is selected at random, what is the probability that the employee is male? If an employee is selected at random, what is the probability that the employee is male and salaried staff?
#26). Both photos are the same problem.
In January 2013, a poll by ABC News indicated that Obama's popularity had reached a three-year high. Suppose the relative frequency of occurrence of each response, grouped by sex, is given in the following table. Rating Excellent Very Good Good Fair Poor Answer: Women Men Relative Relative Frequency Frequency 0.184 ≈ 0.23 unknown 0.25 unknown unknown 0.225 unknown ≈ 0.167 0.103 Assume • the proportion of men's responses rated as either Very Good or Good is 0.488, • the proportion of women's responses rated as either Good or Fair is .353, • the proportion of men's responses rated as Good is≈ 93.6% larger than the proportion of women's responses the same (relative to the women's one), and • the proportion of men's responses rated as Very Good is 14.58% larger than the proportion of women's responses rated as Fair (relative to the women's one.) What proportion of women's responses is rated as Good? (Type your final answer in decimal form (rounded to the nearest hundredth), like 0.36. DO…
Women are recommended to consume 1700 calories per day. You suspect that the average calorie intake is different for women at your college. The data for the 12 women who participated in the study is shown below: 1808, 1681, 1723, 1847, 1808, 1858, 1461, 1449, 1631, 1635, 1815, 1874 Assuming that the distribution is normal, what can be concluded at the αα = 0.01 level of significance? For this study, we should use The null and alternative hypotheses would be: H0:H0: H1:H1: The test statistic = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.) The p-value is αα Based on this, we should the null hypothesis. Thus, the final conclusion is that ... The data suggest the population mean is not significantly different from 1700 at αα = 0.01, so there is sufficient evidence to conclude that the population mean calorie intake for women at your college is equal to 1700. The data…
1.A chi-square test for independence is being used to evaluate the relationship between two variables, one of which is classified into 2 categories and the second of which is classified into 4 categories. What is the df value for the chi-square statistic? a. df = 2 b. df = 6 c. df = 7 d. df = 3

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