A study estimated how a person's social status (rated on a scale where 100 indicates the status of a college graduate) depended upon income. Based on this study, with an income of i thousand dollars a person's status is S(i) = 17.5(i-1)0.53 + Find S'(22). (Round your answer to two decimal places.) S'(22) = Interpret your answer. O At an income of $22,000 social status increases by this amount per additional $1000 of income. O At an income of $22,000 social status decreases by this amount per additional $1000 of income. does not change. O At an income of $22,000 social status O At an income of $22,000 social status increases by this amount per additional $100 of income. income of $22,000 social status decreases by this amount per additional $100 of income. O At an

The z-score for an IQ of 104 is 0.75.Using the answer from Step 1, find the percent of the patients with IQs above 104. (Round your answer to one decimal place.)

For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding. What percentage of your campus student body is female? Let p be the proportion of women students on your campus. (a) If no preliminary study is made to estimate p, how large a sample is needed to be 99% sure that a point estimate p will be within a distance of 0.03 from p? (Round your answer up to the nearest whole number.) students (b) A report indicates that approximately 62% of college students are females. Answer part (a) using this estimate for p. (Round your answer up to the nearest whole number.) students US hp DII @ 23 2$ % 8 3 4 t y e h k V b m

The linguist George Kingsley Zipf (1902-1950) proposed a law that bears his name. In a typical English text, the most commonly occurring word is "the." We say that its frequency rankr is 1. The frequency f of occurrence of "the" is about f = 7%. That is, in a typical English text, the word "the" accounts for about 7 out of 100 occurrences of words. The second most common word is "of," so it has a frequency rank of r = 2. Its frequency of occurrence is f = 3.5%. Zipf's law gives a power relationship between frequency of occurrence f, as a percentage, and frequency rank r. (Note that a higher frequency rank means a word that occurs less often.) The relationship is f = cr-1, where c is a constant. (a) Use the frequency information given for "the" to determine the value of c. C = (b) The third most common English word is "and." According to Zipf's law, what is the frequency of this word in a typical English text? Round your answer to one decimal place. % (c) If one word's frequency rank is…

For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding.What percentage of your campus student body is female? Let p be the proportion of women students on your campus. (a) If no preliminary study is made to estimate p, how large a sample is needed to be 99% sure that a point estimate p̂ will be within a distance of 0.05 from p? (Round your answer up to the nearest whole number.) students(b) A report indicates that approximately 64% of college students are females. Answer part (a) using this estimate for p. (Round your answer up to the nearest whole number.) students

For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding.What percentage of your campus student body is female? Let p be the proportion of women students on your campus. (a) If no preliminary study is made to estimate p, how large a sample is needed to be 99% sure that a point estimate p̂ will be within a distance of 0.03 from p? (Round your answer up to the nearest whole number.)students(b) A report indicates that approximately 59% of college students are females. Answer part (a) using this estimate for p. (Round your answer up to the nearest whole number.)students

For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding.In a combined study of northern pike, cutthroat trout, rainbow trout, and lake trout, it was found that 34 out of 806 fish died when caught and released using barbless hooks on flies or lures. All hooks were removed from the fish. (a) Let p represent the proportion of all pike and trout that die (i.e., p is the mortality rate) when caught and released using barbless hooks. Find a point estimate for p. (Round your answer to four decimal places.)(b) Find a 99% confidence interval for p. (Round your answers to three decimal places.) lower limit       upper limit

You are conducting a study to see if the proportion of men over 50 who regularly have their prostate examined is significantly different from 77%. With HA : p ≠ 77% you obtain a test statistic of z=−2.408 Find the p-value accurate to 4 decimal places.p-value =

For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding.What percentage of your campus student body is female? Let p be the proportion of women students on your campus.   (a) If no preliminary study is made to estimate p, how large a sample is needed to be 99% sure that a point estimate p̂ will be within a distance of 0.04 from p? (Round your answer up to the nearest whole number.) students(b) A report indicates that approximately 54% of college students are females. Answer part (a) using this estimate for p. (Round your answer up to the nearest whole number.) students

The correlation between hours of sleep and hours of study is r = 0.14. (a) Calculate r². (Round your answer to four decimal places.) ,2 = = (b) Choose a sentence that interprets value r². 1.96% of the variation in hours of sleep is not explained by hours of study. Variation in hours of study explains about 1.96% of the observed variation in hours of sleep. 1.96% of the variation in hours of sleep is not explained by the variation in hours of study. Hours of study explains about 1.96% of the observed variation in hours of sleep.