A new study wants to update the proportion of adults with high blood pressure to observe how it has changed since 2015 where it was found to be  p = 0.09. The researchers want the interval to be within 0.02 percent in each direction with 95\% confidence. Assuming they use the previous proportion from 2015 how large should their sample be? Round up to the nearest whole number.

Q: Suppose weights of the checked baggage of airline passengers follow a nearly normal distribution…

A: Let X be the random variable from normal distribution with mean (μ) = 45 pounds and standard…

Q: College students, in general, have a mean of 60 and a standard deviation of 8 on a measure of…

A: Solution-: Let, X= The college students have loneliness scores  Given: We find,

Q: Suppose that IQ scores have a bell-shaped distribution with a mean of 103 and a standard deviation…

A:

Q: Unlike most packaged food products, alcohol beverage container labels are not required to show…

A: The summary of statistics is,

Q: A researcher developed a standardized test to measure anxiety so that the scores distribute normally…

A: Here we need to find the required proportion.

Q: The weights of men in their 30s are normally distributed with a mean of 190 pounds and a standard…

A: From the provided information, Population mean (µ) = 190 pounds Population standard deviation (σ) =…

Q: he effects of mentoring on intelligence scores. He wanted to know as a baseline what the averag

A: mean(μ)=100standard deviation(σ)=16  n=50    let X~N(100,16)

Q: It seems these days that college graduates who are employed full-time work more than 40 -hour weeks.…

A: From the provided information, Population mean (µ) = 40 hours Sample size (n) = 19 Sample mean (x̅)…

Q: Suppose that IQ scores have a bell-shaped distribution with a mean of 100 and a standard deviation…

A: The mean is 100 and the standard deviation is 15.

Q: Unfortunately, arsenic occurs naturally in some ground water.† A mean arsenic level of ? = 8.0 parts…

A: We have given that  Sample size n =36 Sample mean =6.9 Standard deviation =2.6

Q: It seems these days that college graduates who are employed full-time work more than 40 -hour…

A: Given information- Population mean, μ = 40 Sample size, n = 19 Sample mean, x-bar = 44 Sample…

Q: Unfortunately, arsenic occurs naturally in some ground water.† A mean arsenic level of ? = 8.0 parts…

A: mu=8, n=36, Xbar=7.1, s=2.2,  Ho:mu=8 vs H1: mu<8  We use t statistic

Q: Suppose that IQ scores have a bell-shaped distribution with a mean of 100 and a standard deviation…

A:

Q: Suppose that IQ scores have a bell-shaped distribution with a mean of 100100 and a standard…

A: percentage of values greater than 145 = 0.15%  Explanation:Step 1: Define what the empirical rule…

Q: Suppose that IQ scores have a bell-shaped distribution with a mean of 100100 and a standard…

A: To find the percentage of IQ scores that are at least 52 using the empirical rule, we first need to…

Q: The results of a common standardized test used in psychology research is designed so that the…

A: Consider X be a random variable which follows normal distribution indicating the score earned on a…

Q: The height of men is a normally distributed variable with a mean of 68 inches and a standard…

A: Mean(μ)=68Standard deviation(σ)=3

Q: Suppose that IQ scores have a bell-shaped distribution with a mean of 100100 and a standard…

A: Empirical rule: About 68% of data lies within the first standard deviation of the mean. About 95%…

Q: A review of all records in a large vetinary clinic show that indoor domestic cats at the clinic have…

A: Mean () =15standard deviation () =4sample size (n)= 37

Q: Suppose that IQ scores have a bell-shaped distribution with a mean of 101 and a standard deviation…

A: Given that Population mean=101 Standard deviation =14 Using the empirical rule, what percentage of…

Q: According to a report published by the USDA 4 years ago, a typical American consumes an average of…

A:

Q: based on this graph, would the median be greater than the mean? or the mean gretaer than the median?…

A: Here data is negatively(right) skewedmore data at higher end

Q: The length of the western rattlesnake is normally distributed with a mean of 42 inches and a…

A: Determine the length of the snakes that the 95% of western rattlesnakes that are longer than. The…

Q: A psychologist wants to estimate the amount of math anxiety that the population of high school…

A: The psychologist wants to estimate the amount of math anxiety that the population of high school…

Q: The mean total serum cholesterol level in women free of cardiovascular disease is 205 with a…

A: The independent variable is total serum cholesterol level in women free of cardiovascular disease.…

Q: It seems these days that college graduates who are employed full-time work more than 40-hour weeks.…

A: Given data is appropriate for testing of hypothesis to test t-test for single mean. because it is a…

Q: hs of a particular animal's pregnancies are approximately normally distributed, with mean = 251 days…

A: Consider X be the random variable representing the time span of pregnancies.   X follows normal…

Q: In 1988, on the math SAT, the males taking the exam averaged about 500, while the females averaged…

A: From the provided information,

Q: a sample of 1963 scores was drawn from a normal distribution with a mean of 19.84 and a standard…

A: Given that, μ=19.84,σ=1.918n=1963 Consider that exactly 2.3512% of the distribution of means falls…

Q: It seems these days that college graduates who are employed full-time work more than 40-hour weeks.…

A: The independent variable is respondents. The dependent variable is the number of hours worked per…

Q: Forty refrigerators from two different models of a refrigerator manufacturer are compared to see if…

A:

Q: A psychologist wants to estimate the amount of math anxiety that the population of high school…

A:

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.