Charmaine, who turns eighty years old this year, has just learned about blood pressure problems in the elderly and is interested in how her blood pressurecompares to those of her peers. She has uncovered an article in a scientific journal that reports that the mean systolic blood pressure measurement for womeover seventy-five is 130.4 mmHg, with a standard deviation of 6.9 mmHg.Assume that the article reported correct information. Complete the following statements about the distribution of systolic blood pressure measurements forwomen over seventy-five.(a) According to Chebyshev's theorem, at least (Choose one) of themeasurements lie between 116.6 mmHg and 144.2 mmHg.(b) According to Chebyshev's theorem, at least (Choose one)measurements lie between 109.7 mmHg and 151.1 mmHg.of the An ordinary (fair) coin is tossed 3 times. Outcomes are thus triples of "heads" (h) and "tails" (t) which we write hth, ttt, etc.For each outcome, let N be the random variable counting the number of heads in each outcome. For example, if the outcome is thh, then N (thh)=2. Supposethat the random variable X is defined in terms of N as follows: X=2N²-6N-4. The values of X are given in the table below.Outcome ttt hhh hth hht tht htt thh tthValue of X-4 -4 -8-8-8-8-8-8Calculate the probabilities P(X=x) of the probability distribution of X. First, fill in the first row with the values of X. Then fill in the appropriate probabilities inthe second row.Value X of XP(X=x)00 0010XŚ

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Answered: Charmaine, who turns eighty years old…

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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Answer the question in the second photo with the data provided in the first photo
The mean value of land and buildings per acre from a sample of farms is $1400, with a standard deviation of $200. The data set has a bell-shaped distribution. Assume the number of farms in the sample is 74. Use the empirical rule to estimate the number of farms whose land and building values per acre are between $1000 and $1800. round to nearest tenth
Suppose that the heights of adult men in the United States are normally distributed with a mean of 70 inches and a standard deviation of 3.5 inches. What proportion of the adult men in the United States are at most 6 feet tall? (Hint: 6 feet 72 inches.) Round your answer to at least four decimal places.
A mechanic sells a brand of automobile tire that has a life expectancy that is normally distributed, with a mean life of 35,000 miles and a standard deviation of 2100 miles. He wants to give a guarantee for free replacement of tires that don't wear well. How should he word his guarantee if he is willing to replace approximately 10% of the tires? Click to view page 1 of the table. Click to view page 2 of the table. Tires that wear out by miles will be replaced free of charge. (Round to the nearest mile as needed.)
Reports on a student's test score such as the SAT or a child's height or weight usually give the percentile as well as the actual value of the variable. The percentile is just the cumulative proportion stated as a percent: the percent of all values of the variable that were lower than this one. The upper arm lengths of females in the United States are approximately Normal with mean 35.735.7 cm and standard deviation 2.12.1 cm, and those for males are approximately Normal with mean 39.139.1 and standard deviation 2.32.3 cm. Larry, a 6060‑year‑old male in the United States, has a upper arm length of 37.837.8 cm. What is his percentile? (Enter your answer rounded to two decimal places.)
Suppose there is a city where the mean cost per month of a one-bedroom apartment is $1,500, with a standard deviation of $250. Approximately what percentage of one-bedroom apartments in the city cost between $750 and $1,000?
Suppose that the heights of adult men in the United States are normally distributed with a mean of 70.5 inches and a standard deviation of 3.5 inches. What proportion of the adult men in United States are less than 6 feet tall? (Hint: 6 feet =72 inches.) Round your answer to at least four decimal places.
Sarah was told that she scored two standard deviations above the mean on her PSYCÓ 104 final exam. Her instructor posted the class distribution and revealed the mean was 65% and the standard deviation was 10%. What was Sarah's test result? cro O a. 55% cro O b. 45% cro O c. 85% crc O d. 75% crc O e. 55%
Suppose there is a city where the mean cost per month of a one-bedroom apartment is $1,500, with a standard deviation of $250. Approximately what percentage of one-bedroom apartments in the city cost between $750 and $1,000?
The mean height of 18 to 24-year-old males in the United States is about 70.1 inches, with a standard deviation of 2.7 inches. The mean height of 18 to 24-year-old females is about 64.8 inches, with a standard deviation of 2.5 inches. Both distributions are approximately normal. a. To work as a flight attendant for United Airlines, you must be between 5'2'' and 6' tall (female or male). What proportion of U.S. women between the ages of 18 and 24 meet this height limitation? b. How tall does a U.S. woman between the ages of 18 and 24 have to be land in the 35th percentile?

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