A hospital administrator wants to estimate the proportion of patients whose hospital stay exceeds a week. How many patients should be sampled to estimate the proportion staying more than a week to within 4 percentage points with 98% confidence? In your calculation, please use the critical value rounded to 3 decimal places. Hint: Make sure that you round up to the next integer.

Q: The 95th percentile of 6-year-old boys' heights in the United States is 48.8 inches tall.  Explain…

A: Given: The 95th percentile of 6-year-old boys' heights in the United States is 48.8 inches tall.

Q: 110 students at a college were asked whether they had completed their required English 101 course,…

A: It is given that 110 students at a college where 69 students said that they had completed their…

Q: What scale of measurement is being used when a teacher measures the number of correct answers on a…

A:

Q: When 345 HS students were surveyed, 125 said that they completed a driver's education class prior to…

A:

Q: 3. In a Gallup Pool, 52% of 1038 surveyed adults said that second hand smoke is "very harmful". What…

A: Following information is given:   Total number of people survey = 1038 Percentage of people who said…

Q: 104 concert-goers at the Glass House in Pomona, California were asked if they know how to play an…

A: Here it is given that- Number of concert goers  = 104 Number of concert goers who can play an…

Q: 103 students at a college were asked whether they had completed their required English 101 course,…

A: It is given that, 103 students at a college were asked whether they had completed their required…

Q: based on the estimation what is the appropriate conclusion?

A: Let p be the population proportion of all people living in a certain region.Given that,sample…

Q: Find the z-score that separates the largest 5% of scores from the rest.  Round your result to 3…

A: Obtain the z-score that separates the largest 5% of scores from the rest. The z-score that separates…

Q: 110 students at a college were asked whether they had completed their required English 101 course,…

A:

Q: Round the point estimate to the nearest thousandth. 368 randomly selected light bulbs were tested in…

A: Given Data Sample Size, n = 368 Number of successes, x = 94

Q: The state education commission wants to estimate the fraction of tenth grade students that have…

A: The sample size is The number of students reading above the eighth-grade level is . The objective is…

Q: 114 students at a college were asked whether they had completed their required English 101 course,…

A: 114 students at a college were asked whether they had completed their required English 101 course,…

Q: you want to do a survey to help you estimate the true porportion of current students who have…

A:

Q: A newspaper infographic titled "Baby's First Photo Reveal" summarized data from a survey of 1,000…

A: Answer is given by confidence interval.

Q: The last student surveyed was active for 25 minutes. What percent of students were more active than…

A: It is given that Min = 4, Median = 25 and maximum = 86

Q: A random sample of 300 students was taken from an affluent school district. There were 75 students…

A: The sample size is 300, number of students who were coached for the SAT's is 75. The sample…

Q: Experts claim that 10% of murders are committed by women.  In a random sample of 67 murders, 10 were…

A:

Q: The Institute of Education Sciences measures the high school dropout rate as the percentage of…

A: Given:n =  1000Population Proportion, p = 8.1% = 0.081Significance level, α = 5% = 0.05

Q: Find the value of X2 values that separate the middle 80 % from the rest of the distribution for 20…

A:

Q: Historically, in Australia 84% of customers select that parcels may be left at the front door if…

A: The question is about sampling dist. of proportion   Given : Prop. of customers selects that parcels…

Q: Drowning in bathtubs is a major cause of death in children less than 5 years old. A random sample of…

A: We Have to find Estimate the percent of all parents of young children who use baby bathtubs.

Q: 130 students at a college were asked whether they had completed their required English 101 course,…

A:

Q: What is the percentile rank x=15 and what is the score for 75th percentile?

A: If the we have no of scores is 15 then we have formula for percentile rank as:…

Q: According to recent data, 12 percent of people are left handed. In a sample of 20 people, how many…

A: Answer: Using the given data, Let X denotes the number of people who are left handed P(left handed)…

Q: A software company is interested in improving customer satisfaction rate from the 54% currently…

A: Let p be the population proportion of customer satisfaction rate.Given that,Population proportion…

Q: Find the best point estimate for the proportion of students at the college who have completed their…

A: A point estimate is defined as the single value that is calculated from the sample data to estimate…

Q: A histological test for cancer has sensitivity, specificity, positive predictivity, and negative…

A: To find, Which of the four indicators would you use to reassure a patient that the positive result…

Q: 81 students at a college were asked whether they had completed their required English 101 course,…

A: The number of students said yes (x) is 54 and the sample size (n) is 81.

Q: Suppose that I want to estimate the percentage of students who  love statistics in California. How…

A: Given information- Margin of error, E = 3% = 0.03 Confidence level, c = 90% Since nothing is known…

Q: Find P₄₁ , which is the score separating the bottom 41% from the top 59%. P₄₁ =

A: It is given that the area is 0.41.

Q: A survey of 500 citizens of a large country revealed that 70 of them believe the government's…

A: Solution : Given that : A survey of 500 citizens of a large country revealed that 70 of them believe…

Q: You want to estimate the percentage of statistics students who get grades of C or better. How many…

A: Obtain the sample size. The formula of sample size is, Obtain the area of probability in the right…

Q: According to recent data, 21 percent of people are left handed. In a sample of 100 people, how many…

A: The expected number of the left handed people is obtained below as follows:   From the information,…

Q: A pharmaceutical researcher wants to determine the proportion of people who believes that branded…

A: Given that  Margin of error =E =1%=0.01 95% confidence.

Q: The American Heart Association is about to conduct an anti-smoking campaign and wants to know the…

A:

Q: The Humane Society is interested in finding out how many households in America have at least one…

A: The provided information are: Confidence level = 95% = 0.95 Margin of error (E) = 4% =0.04 From the…

Q: 88 students at a college were asked whether they had completed their required English 101 course,…

A: Given info: 88 students at a college were asked whether they had completed their required English…

Q: Suppose that out of 10,351 convicts who escaped from U.S. prisons, only 7767 were recaptured. Let p…

A: a)P is the true population proportion of all escaped convicts who will eventually be…

Q: In 2016 the Better Business Bureau settled 84% of complaints they received in the United States.…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: A sample of 900 computer chips revealed that 68% of the chips fell in the first 1000 hours of their…

A: Solution is given below

Q: 134 students at a college were asked whether they had completed their required English 101 course,…

A: GivenTotal number of students (n)=134No.of students said "yes"(x)=72

Q: A survey of 700 non fatal accidents showed that 287 involved defective equipment.  Find a point…

A: Given

Q: The American Heart Association is about to conduct an anti-smoking campaign and wants to know the…

A: Suppose p is the population proportion of all Americans over 35 who smoke.

Q: 82 students at a college were asked whether they had completed their required English 101 course,…

A: