Police Academy Acceptance Exams To qualify for a police academy, applicants are given a test of physical fitness. The scores are normally distributed with a mean of 66 and a standard deviation of 8. If only the top 22% of the applicants are selected, find the cutoff score. Round z-value calculations to 2 decimal places and the final answer up to the nearest whole number. Cutoff score= X

Q: If you roll two dice what’s the probability of rolling a seven the numbers on the dice add up to…

A: we roll two dice total possibilities = 62=36all outcomes are equally likely

Q: Let z be a standard normal random variable with mean 0 and standard deviation a 1. Use Table 3 in…

A: Z be the standard normal distribution. Mean=0, variance=1

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A: Given the number of prizes is 4

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A: Mean=90, standard deviations= 16

Q: The numbers were 7 & 8.  Not the ones you posted for answer

A:

Q: The following random sample was selected from a normal distribution: 16 8 2 11 9 8 12 13 1 20 (a)…

A: Given,sample data from normal population - 16, 8, 2, 11, 9, 8, 12, 13, 1, 20.sample size, n = 10.To…

Q: Suppose we are interested in studying a population to estimate its mean. The population is normal…

A:

Q: Would you be able to solve D and E.  For question I have .96072

A: number of sample =n=15 From the other three part we know that mean =108 and variance =698

Q: A medical researcher wishes to see whether the pulse rate of smokers are higher than the pulse rates…

A: The formula of test statistic is,

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A: Let X be the score for the reading portion of the test.

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A: The variable X denotes the time for a fifth-grade student took to read a particular passage. It has…

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A:

Q: Gay/lesbian Bisexual Heterosexual/Straight MG/L = 16 MBi = 17 MH/S = 22   Source SS df MS…

A: SSorientation=300,SSerror=2961There are three treatments and each treatment has 22…

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A: We have to determine which statement is true for given situation.Sample sizes n1=20 ,n2=15

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A: The question is about regression.Introduction :The general form of multiple regression model is…

Q: (c) The scatterplot of the number of household members against log(income) and that of log(income)…

A: From the given scatterplot it is evident that there is an increasing trend followed by the points…

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A: The partial output of the ANOVA is given below.Given that,Assume the level of significance To…

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A: Mean()=148.4standard deviation()=2.3sample size(n)=16

Q: Identify the values needed to calculate a confidence interval at the 99% confidence level. Then find…

A: It is given that favourable cases, x = 76Sample size, n = 350Confidence level = 99%

Q: You have a group of twelve people. You need to pick a president, treasurer, and secretary from the…

A: Given that you have a group of twelve people. You need to pick a president, treasurer, and secretary…

Q: hat(1) Read the Z table AND make a sketch. P(01.84) P(Z -1.84 = =

A: Here we have to computeP(Z<-1.84)P(Z<1.84)P(Z>-1.84)

Q: She obtains the accompanying data Complete parts (a) through (d) below (a) Venty that the data are…

A: The given data is 11.94, 11.74, 12.25, 11.32, 11.85, 11.86, 11.59, 12.15, 11.76, 11.55, 12.31, 12.59

Q: Let A={1,2}, B={2}, C={1,3}, D={2,3}. Select a pair of mutually exclusive events.

A: Event Event Event Event

Q: A random variable is normally distributed with a mean of μ50 and a standard deviation of a = 5. a.…

A: The formula of the Z-score is,Where,X denotes the raw data point,µ denotes the population mean,σ…

Q: Forty percent of players scored 8 points or Sixty percent of players scored 8 points or more - less…

A: Given that,The 40th percentile for points scored per player in a game is 8.That is,P40 = 8

Q: Suppose that the following are a random sample of length-of-life measurements of components whose…

A: Given,a random sample of the length of life measurements follow exponential distribution.97%…

Q: A local refrigerator repair shop keeps records of complaints received from its customers. Complaints…

A: The question is about frequency distribution.Given data:

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A: Given thatMean of exponential distribution And we know that cdf of exponential distribution is given…

Q: Auto Loans-George works for a credit union that serves a large, urban area. For his annual report,…

A: confidence level 90%=0.90Level of significance Margin error E=0.13

Q: An industrial psychologist hired by a leading accounting firm wanted to know if the average number…

A: The formula of test statistic is,where, denotes the sample means denotes the sample standard…

Q: The cost function y = 150 +7X OA. has a slope coefficient of 150 OB. has an intercept of 150 OC.…

A: The cost functiony = 150 + 7*X

Q: A flooring company sells carpet by the metre off of a standard sized roll. The mean amount of carpet…

A: As per our guidelines we are supposed to answer only one question kindly post the remaining question…

Q: Suppose that, at the end of last semester, Marie gave her introductory statistics class a final…

A: The total number of students is 64A histogram plot representing the distribution of the  exam scores…

Q: For each of the scenarios below, identify the most appropriate statistical procedure from among…

A: It is required to identify the most appropriate statistical procedure for each scenario, and explain…

Q: Suppose we are interested in studying a population to estimate its mean. The population is normal…

A: In this case, the corresponding confidence interval (CI) for the considered 20 samples is given with…

Q: • the 90% Cl for mu [Select] • the 95% CI for mu [Select] • the 99% CI for mu [Select] V include 3…

A: Given that,Population mean P-value = 0.13Confidence levels:

Q: An article in Fortune (September 21, 1992) claimed that nearly one-half of all engineers continue…

A: To find the p-value, we have to calculate the test-statistic first. The z test statistic for…

Q: Actuary Exams A survey of 35 individuals who passed the seven exams and obtained the rank of Fellow…

A: From the provided information,Confidence level = 95%

Q: OGIVE curve depicting the grouped data

A: The grouped frequency distribution of the data is given below.Interval fCumulative…

Q: 134. Lesley E. Tan investigated the relationship between left-handedness vs. right-handedness and…

A: The sample size for left-handed is 41 and the sample size for right-handed is 41.

Q: Consider a continuous Random Variable X whose probability is distributed as 1 (x-10)² 8 fx(x) = 1.…

A: Let X be a continuous random variable and the probability density function (PDF) of X is given…

Q: A recent poll of 1900 randomly selected 18-25-year-olds revealed that 220 currently use marijuana or…

A: Here, z test for population proportion will be used because standard deviation is not given.First of…

Q: Question list Question 7 O Question 8 O Question 9 K The data given to the right includes data from…

A: sample size (n)= 42number of red candies (x) =7want to construct a 95% confidence interval for…

Q: You are a data analyst for a health insurance company and want to estimate the population mean of…

A: The number of patients is 32.

Q: A liquid-dispensing machine has been designed to fill bottles with 1.0 liter of liquid. The standard…

A: It is required to determine whether the process is in control or out of control, based on the given…

Q: You have the following information: t1 Walmart Returns 0.03 Market Returns 0.09 t2 0.02 0.07 t3…

A: Given the data on Walmart returns and market returns.Want to calculate covariance?

Q: Let z be a random variable with a standard normal distribution. Find the indicated probability.…

A: Let z be a random variable with a standard normal distribution.

Q: According to survey data, the distribution of arm spans for females is approximately Normal with a…

A: Mean (µ) = 65.3Standard deviation (σ) = 3.4The distribution of arm spans for females is…

Q: Calculate the minimum sample size that you must have to meet these requirements.

A: Let p be the pop. prop. of college students in the state who receive the form of financial aid.Given…

Q: A population of values has a normal distribution with �=196.5 and �=96. Find the probability that a…

A: From the provided information,