K.docxhis View an example Get more help -$4²JAssume that females have pulse rates that are normally distributed with a mean of μ = 75.0 beats per minute and a standard deviation of a = 12.5 beats per minute. Complete parts (a) through (c)below.Aa. If 1 adult female is randomly selected, find the probability that her pulse rate is less than 81 beats per minute.The probability is(Round to four decimal places as needed.)@2***WSXcommand#380F3EDс$4aARF%5VFSTG6BMacBook AirF6YH&7NF7UJ*8DIIFOIM(9KDDF9O<I)OLcommandF10P>.Clear all-:;IF11{[option+=11?11Check answerShow All2449$12}1XdeleteCre

Suppose the random variable x defines the pulse rate of females.

Answered: Assume that females have pulse rates…

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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Find the standard deviation of this probability distribution. Give your answer to at least 2 decimal places
K Assume that an adult female is randomly selected. Suppose females have pulse rates that are normally distributed with a mean of 71.0 beats per minute and a standard deviation of 11.7 beats per minute. Find Pg0, which is the pulse rate separating the bottom 90% from the top 10%. (Hint: Draw a graph.) Pg0 = (Round to one decimal place as needed.)
The heights (in inches) of 10adult males in an office are listed below. a. Find the standard deviation. Show the table (two columns) with all entries and the formula with appropriate entries. E(x-x)² S = 70 72 71 70 69 73 69 68 70 60 n-1
Find the indicated probability and interpret the result. From 1975 through 2020, the mean annual gain of the Dow Jones Industrial Average was 653. A random sample of 33 years is selected from this population. What is the probability that the mean gain for the sample was between 400 and 800? Assume σ = 1540. The probability is ☐ (Round to four decimal places as needed.)
f the standard deviation of a normally distributed population is 22.0 and we take a sample of size 4, then the standard error of the mean is
K Assume that females have pulse rates that are normally distributed with a mean of μ = 76.0 beats per minute and a standard deviation of o= 12.5 beats per minute. Complete parts (a) through (c) below. a. If 1 adult female is randomly selected, find the probability that her pulse rate is less than 79 beats per minute. The probability is (Round to four decimal places as needed.) b. If 16 adult females are randomly selected, find the probability that they have pulse rates with a mean less than 79 beats per minute. The probability is (Round to four decimal places as needed.) c. Why can the normal distribution be used in part (b), even though the sample size does not exceed 30? OA. Since the original population has a normal distribution, the distribution of sample means is a normal distribution for any sample size. OB. Since the distribution is of individuals, not sample means, the distribution is a normal distribution for any sample size. OC. Since the distribution is of sample means, not…
K Assume that adults have IQ scores that are normally distributed with a mean of μ = 105 and a standard deviation o=20. Find the probability that a randomly selected adult has an IQ between 89 and 121. Click to view page 1 of the table. Click to view page 2 of the table. The probability that a randomly selected adult has an IQ between 89 and 121 is (Type an integer or decimal rounded to four decimal places as needed.)
Pl Assume that thermometer readings are normally distributed with a mean of 0°C and a standard deviation of 1.00°C. A thermometer is randomly selected and tested. For the case below, draw a sketch, and find the probability of the reading. (The given values are in Celsius degrees.) Between 0.50 and 2.00 Click to view page 1 of the table. Click to view page 2 of the table. Draw a sketch. Choose the correct graph below. OA. OB. О в. C. z-0.50 z-2.00 z-0.50 z-2.00 z-0.50 z-2.00 The probability of getting a reading between 0.50°C and 2.00°C is. Click to select your answer(s). atv 4 4. MacBook Air F10 F11 F9 F6 F7 F8 임미 F3 F5 F4 F2 F1 & %$4 4. #3 9- 6.
High levels of cholesterol in the blood are associated with higher risk of heart attacks. Will using a drug to lower blood cholesterol reduce heart attacks? The Helsinki Heart Study recruited middle-aged men with high cholesterol but no history of other serious medical problems to investigate this question. The volunteer subjects were assigned at random to one of two treatments: 2051 men took the drug gemfibrozil to reduce their cholesterol levels, and a control group of 2030 men took a placebo. During the next five years, 56 men in the gemfibrozil group and 84 men in the placebo group had heart attacks. Is the apparent benefit of gemfibrozil statistically significant? Using proportion values rounded to four decimal places, what is the z- test statistic? Round your answer to two decimal places.
10
Assume that thermometer readings are normally distributed with a mean of 0°C and a standard deviation of 1.00°C. A thermometer is randomly selected and tested. For the casebelow, draw a sketch, and find the probability of the reading. (The given values are in Celsius degrees.) Between 0.25 and 1.25 Click to view page 1 of the table. LOADING... Click to view page 2 of the table. LOADING... Draw a sketch. Choose the correct graph below. A. z=0.25z=1.25 A graph with a bell-shaped curve, divided into 3 regions by 2 lines from top to bottom, both on the right side. The region between the 2 lines is shaded. Moving from left to right, the z-axis below the first line is labeled "z=0.25". The z-axis below the second line is labeled "z=1.25". B. z=0.25z=1.25 A graph with a bell-shaped curve, divided into 3 regions by 2 lines from top to bottom, both on the right side. Moving from left to right,…

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