Assume that the population of a store customers is infinite. For this population, the proportion of those customers who buy the service plan is 0.20. For the sample size of 232, find the standard deviation of the sampling distribution of the sample proportion (standard error). Round your answer to four decimal places.

Q: CNNBC recently reported that the mean annual cost of auto insurance is $1019. Assume the standard…

A: Given that  Mean = 1019 Standard deviation = 238 Sample size = 72

Q: According to a Boston Globe story, only about 1 in 6 Americans have blue eyes, whereas in 1900 about…

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Q: You throw a ball as far as you can 5 times, recording the distance for each throw: 165 feet, 184…

A: since only 5 observation is given we will consider them as sample (n = 5)and population (N = 100)…

Q: 3. The number of miles traveled per gallon of gasoline for a certain car has a mean of 25 and a…

A: Given that  Mean=25 Standard deviation =2 Sample size n=20

Q: The average house has 11 paintings on its walls. Is the mean larger for houses owned by teachers?…

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Q: Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard…

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Q: udents? The data below shows the results of a survey of 20 college students asking hem how many days…

A: Given Sample size = 20 Sample sum = 812 Sample mean = 40.6

Q: A school with a student population of 5000 has 4495 students uninfected by COVID-19. What is the…

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Q: Calculate the sample standard deviation for this data set: 65, 48, 70. The formula for the sample…

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Q: Use the confidence interval to find the margin of error and the sample mean. (.228, 0.390)

A: We know that the Margin of error = (upper_limit - lower_imit )/2 and Sample mean = (upper limit +…

Q: The population Mean is 125 with a st dev of 22.However , the population distribtuon is skewed to the…

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Q: Calculate the % relative standard deviation of three sample preprations if the calculated%…

A: Three sample  : N = 396% , 94% , 98% We have to calculate (% relative standard deviation) % relative…

Q: The Transport Network Vehicle Service (TNVS) drivers have an average booking of 22 rides a day with…

A: Here we have given the information, using this information we have to find the standard error of the…

Q: In a certain state, the recent average critical reading standardized test score was 540. Assume that…

A: P(X<500)=Pz<500-540100=P(z<-0.4)=0.3446=34.46% Therefore the correct option is A option.

Q: Below represents the amounts that a random sample of employees reported that they spent on dinner…

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Q: For the following situation, find the mean and standard deviation of the population. List all…

A: Given word counts of five essays are 507, 628, 541, 612 and 577.The mean and standard deviation are…

Q: In which month is it more unusual to have a day with a high temperature of 57°​? Explain

A: For January, mean = 36 and SD = 9 Fir July, mean = 77 and SD = 8 First we calucuate the z scores of…

Q: the following situation, find the mean and standard deviation of the population. List all samples…

A: See the Excel output

Q: The average and standard deviation for ACT scores are 20 and 3 respectively. average and standard…

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Q: The average IQ of the adult population is 100. A researcher believes that average IQ of the…

A: The sample mean is calculated as follows: Mean = (69+79+89+99+109)/5           = 445/5           =…

Q: Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard…

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Q: Tina's science fair project was to estimate the mean amount of chemicals in her city's water supply.…

A: Solution:  Relationship between the sample size and the confidence interval:   If the sample size or…

Q: The ages (in years) of a random sample of shoppers at a gaming store are shown. Determine the range,…

A: We have to calculate some summary statistics for given data.

Q: Assume that adults have IQ scores that are normally distributed with a mean of 105   and a standard…

A: It is given that the mean and standard deviation are 105 and 15, respectively.

Q: Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those…

A: 36) Answer:- Given, The IQ scores (X) of adults are normally distributed with a mean of 100 and a…

Q: Which test was better?. Gina took a midterm in her math class and her biology class. After she gets…

A: The objective is to calculate z score for math test for Gina. we have given  x=47 mean(x)=39…

Q: The heights of adult women are normally distributed with a mean of 64.5 inches and a standard…

A: The question is about normal distributionGiven :Mean height of adult women (  ) = 64.5…

Q: 5. These are the heights of randomly selected graduating undergraduate students in cm. 160 171 171…

A: Let X denotes the height of the students. Then, the mean, variance, and standard deviation are given…

Q: The average American gets a haircut every 44 days. Is the average smaller for college students? The…

A: Introduction: Denote μ as the true average number of days that college students get a haircut.

Q: The middle 95% of a group of 1000 students got scores ranging from 50 to 90 on a math test. If the…

A: Normal Distribution: Understand the properties of the normal distribution, including the mean (μ)…

Q: Find the standard deviation of the following set of scores. 10, 2, 38, 23, 38, 23, 21, 23

A: From given data, set of score: 10, 2, 38, 23, 38, 23, 21, 23 Count, N = 8 Sum, ∑x = 178

Q: IV. The table below shows the number of students who visit the library per day. X 30 45 52 55 60 16.…

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Q: The distances golf balls travel under laboratory testing conditions are normally distributed. The…

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Q: he lengths of pregnancies are normally distributed with a mean of 266 days and a standard deviation…

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Q: In the 1992 presidential election, Alaska's 40 election districts averaged 2023 votes per district…

A: Givenμ=2023 and σ=555   Use standardization asz=x-μσ

Q: me results of a certain medical test are normally distributed with a mean of 127 and a standard…

A: Given data,Mean μ=127sd     σ=12P(X>133)=?

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

A: Given Solution: The following is the data provided:

Q: on: Answer the following problems. Show your solutions. Compute the mean, median and mode of the…

A: Mean: It is the sum of an observations divided by the total number of observations of the data set.…

Q: In the 1992 presidential election, Alaska's 40 election districts averaged 1980 votes per district…

A: Given Information: Alaska's 40 election districts averaged 1980 votes per district for President…