Selected Technologies According to recent surveys, 60% of households have personal computers. If a random sample of 160 households is selected, what is the probability that more than 53 but fewer than 85 have a personal computer? Use The Standard Normal Distribution Table. Round z-value calculations to 2 decimal places and final answer to at least 4 decimal places. P(53

Q: HWK9  A FDA researcher is investigating a new drug that claims to lower participants' levels of LDL…

A: As the level of significance(α) is not given, I have considered a standard value α= 0.05

Q: Jse the standard normal table to find the z-score that corresponds to the given percentile. If the…

A: Using the standard normal table to find the 33rd percentile we have to find the value of z such…

Q: Finding the Mean, Variance, and Standard Deviation of a Binomial Distribution 13% of students at a…

A:

Q: The mean number of words per minute (WPM) read by sixth graders is 98 with a standard deviation of…

A:

Q: A particular fruit's weights are normally distributed, with a mean of 211 grams and a standard…

A: Mean=211 Standard deviations=18

Q: A student finds that the average price of a movie ticket in Washington is $12.25 and that the…

A: From the provided information, Mean (µ) = $12.25 Standard deviation (σ) = $2 Let X be a random…

Q: A particular fruit's weights are normally distributed, with a mean of 323 grams and a standard…

A: given data, normal distributionμ=323σ=5we have to find out the given probabilties.

Q: Refer to the accompanying table, which describes the number of adults in groups of five who reported…

A: The mean number of sleepwalkers in groups of five is obtained below as follows: From the…

Q: The average wait time to get seated at a popular restaurant in the city on a Friday night is 12…

A: Given information- Population mean, μ = 12 minutes Sample size, n = 14 Sample mean, x-bar = 11.4286…

Q: ease no written by hand solution A social media survey found that 65​% of parents are​ "friends"…

A: Given,proportion (p)  of parents are​ "friends" with their children on a certain online networking…

Q: Indy 500 Qualifier Speeds The speeds in miles per hour of seven randomly selected qualifiers for the…

A: The given question requires accurate answers rounded to four decimals. Hence I will use excel to…

Q: A pharmaceutical company claims that a drug is effective in treating 90% of people having severe…

A:

Q: The Value of Pi The ratio of the circumference of a circle to its diameter is known as (pi). The…

A:

Q: The high temperature, in ∘C, on the first day of winter was recorded in a certain city every year…

A: Given data is,4,12,6,9,6,11sample size(n)=6

Q: The Graduate Management Admission Test (GMAT) is taken by individuals interested in pursuing…

A: Population mean (µ) = 563Sample size (n) = 250Population standard deviation (σ) = 118The null…

Q: 3. A sociologist is studying marriage customs in a rural community in Denmark. A random sample of 35…

A: From the provided information, Standard deviation (s) = 2.3 Confidence level = 95% Margin of error…

Q: 6. Telephone Surveys The Pew Research Center reports that they are only able to contact 76% of…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub- parts for…

Q: A particular fruit's weights are normally distributed, with a mean of 277 grams and a standard…

A:

Q: Which of the following is not among the steps in Hypothesis Testing?

A: Here We will list the Steps for Hypothesis Test

Q: Determine whether the following graph can represent a variable with a normal distribution. Explain…

A:

Q: You want to see if it makes a difference which lane to be in when there is traffic. You randomly…

A: Given a randomly observed 272 cars as they pass by on the four-line freeway asOutcomeFrequencyLane…

Q: In the 1992 presidential election, Alaska's 40 election districts averaged 1936 votes per district…

A: Given : Mean = μ = 1936 Standard deviation = σ = 570 Sample size = n = 40

Q: We are interested in analyzing data related to college football. Use S to denote the team is in the…

A: Given information- We have given that the probability of team is in the S = 5.5% So, the probability…

Q: A student's 10 scores on 10-point class quizzes include a 5, an 8, a 3, five 9s, a 7, and a 10. The…

A: A student's 10 scores on 10-point class quizzes include a 5, an 8, a 3, five 9s, a 7, and a 10.  The…

Q: None

A: Step 1: Given informationMean = 86Variance = 9Sample size = 33 Step 2: Standard…

Q: Your Operations Manager has sample data for 100 competitors. She asks you to estimate the mean…

A: Suppose µ is the population mean time-to-buy products.

Q: A furniture company wants to know what percent of their customers are satisfied with the furniture…

A: The data on furniture purchases is provided as follows:Sample size, Proportion of satisfied…

Q: On a particular college campus, 29% of the students belong to a fraternity or sorority. If 44…

A: Let X be the number of students who belong to a fraternity or sororityn=44  is the number of…

Q: Determine whether the following graph can represent a variable with a normal distribution. Explain…

A: The objective is to determine if the graph represents a normal distribution.

Q: The Public Service Student Loan Forgiveness program states that the average amount of student loan…

A:

Q: Refer to the accompanying table, which describes results from groups of 8 births from 8 different…

A: Step 1: Given that, Random variable (x)= Number of girls among 8 children we have to find the mean…

Q: In a distribution where the mean is 70 and the standard deviation is 3, find the largest fraction of…

A: Here, Chebyshev's inequality is applicable as we don't have any information about the distribution

Q: y school, 21 % of children wear glasses. Suppose that a random hildren is selected. Find the mean…

A: The random variable  be the number of children who wear glasses.Sample size: , andProbability of a…

Q: No written by hand solution and no image A software company is interested in improving customer…

A: Population proportion, Sample size, Number of customers who were satisfied,

Q: Claim: Most adults would erase all of their personal information online if they could. A software…

A: Given that n=446 p^=63%=0.63 Let p=0.5

Q: Find the expected frequencies if it is assumed that the number of absentees is independent of the…

A: The data is given on the number of pupils absent on particular days.DayOM125Tu88W85Th94F108Total500

Q: In a survey of a group of men, the heights in the 20-29 age group were normally distributed, with a…

A: Given,mean(μ)=67.7standard deviation(σ)=4

Q: The letter "t" makes up an estimated 8% of a certain language. Assume this is still correct. A…

A: Given: p=0.08 and n=1000.   The value of z is calculated…

Q: More Information From the Online Dating Survey A survey conducted in July 2015 asked a random sample…

A: Sample size: Number of successes: Confidence level:

Q: The following table shows the number of people that are either 18, 19, 20 or 21 years old, from a…

A: a)The frequency table shows the age distribution of people.

Q: Response time is an important statistic for measuring the effectiveness of a fire department, and is…

A: Solution: Let X be the response time. From the given information, X follows normal distribution with…

Q: How Many Birds Do Domestic Cats Kill? "Domestic cats kill many more wild birds in the United States…

A: The sample size is 55, sample mean is 2.4, and standard deviation is 1.51. The degrees of freedom…