A normal population has mean u=7 and standard deviation G5. (a) What proportion of the population is less than 19? (b) What is the probability that a randomly chosen value will be greater than 4? Round the answers to four decimal places. Part 1 of 2 The proportion of the population less than 19 is Part 2 of 2 The probability that a randomly chosen value will be greater than 4 is

Q: sample of 76 scores is chosen. Use the TI-84 Plus calculator. Part 1 of S (a) What is the…

A:

Q: Standardized tests: In a particular year, the mean score on the ACT test was 20.8 and the standard…

A: From the given information,   ACT: Mean = 20.8 Standard deviation = 3.8   SAT: Mean = 518 Standard…

Q: problem or area of focus in Education that might be investigated using action research Question 8:…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: R2.6 Acing the GRE The Graduate Record Examinations (GRES) are widely used to help predict the…

A: Given information- Population Mean, µ = 694 Population standard deviation, σ = 112 Let X be the…

Q: During September, the average temperature of Laurel Lake is 62.2° and the standard deviation a…

A: Mean=M=62.2, Standard deviation=S=3X~N(M=62.2, S=3)

Q: Police Academy Acceptance Exams To qualify for a police academy, applicants are given a test of…

A: From the provided information,

Q: . Earthquakes The average number of earthquakes the occur in Los Angeles over one month is 36. (Most…

A: Given ,          Meanu=36        Standard deviation σ=3.6        Sample size n=35

Q: A normal population has mean µ = 7 and standard deviation o = 5. (a) What proportion of the…

A: Population mean=7Population standard deviation=5

Q: 16) A normal population has a mean of 70 and a standard deviation of 5. What is the probability that…

A: The mean and standard deviation are 70 and 5.

Q: The length of time that the SAT takes to complete follows some unknown distribution with mean 2.5…

A: Population mean μ =2.5 Population standard deviation =0.25 Sample size n =60 Standard error=S.D/√n…

Q: A psychologist obtains a random sample of 20 mothers in the first trimester of their pregnancy. The…

A:

Q: If only the top 15% of the applicants are selected, find the cutoff score. Round z-value…

A: We have given that the random variable score i.e, X follows normal distribution with a mean of 64…

Q: Using excel functions solve the following  The mean daily production of a herd of cows is assumed…

A: Given: μ = 31 σ = 7.1 Let x be the daily production.

Q: Standardized tests: In a particular year, the mean score on the ACT test was 22.3 and the standard…

A: Given,For SAT mathematics test:mean(μ)=504standard deviation(σ)=100and Z-score=-0.5

Q: The top 4% of students receive $500. What is the minimum score you would need to receive this award?…

A: We have given that  Mean = 71 Standard  deviation = 4

Q: The average time for a student to complete this quiz is 24 minutes with a standard deviation of 2…

A: We have given that,  The students quiz are normally distributed with mean(mu) = 24 and standard…

Q: Intelligence Quotient (IQ) scores are often reported to be normally distributed with u = 100.0 and o…

A:

Q: IQ scores have a mean of µ=100 in the general population, and have a standard deviation of σ=15. You…

A:

Q: 17) The weights of adult beagles are normally distributed with a mean of 25 pounds and a standard…

A:

Q: A normal population has mean l=7 and standard devlation a 8, (a) What proportion of the population…

A:

Q: A normal population has mean  μ  =  34  and standard deviation  σ  =  10 . (a) What…

A: In order to find the proportion of the population that falls within a certain range, we first need…

Q: It is supposed that values of pH in rainfalls are normally distributed. You know that population…

A: Given Standard deviation=0.6 Margin of error=0.2 At 95% confidence level of z value Z=1.96

Q: IQ scores have a mean of µ=100 in the general population, and have a standard deviation of σ=15. You…

A: Given µ=100 and σ=15 n=25 Px¯≤78=Px¯-μσn≤78-μσn               =Pz≤78-1001525             =Pz≤-7.3333…

Q: Step 2 of 2: What is the probability that the mean IQ score of people in the sample is less than 95?…

A: Intelligence Quotient (IQ) scores are often reported to be normally distributed with μ= 100.0 and…

Q: The scores on the SAT verbal test in recent years follow approximately the normal distribution…

A:

Q: greater than 205         Part 2 What is the probability that the sample mean cholesterol level…

A: Population mean : μ=196 Population standard deviation : σ=36 Sample size : n=104

Q: Suppose the population average amount of dog biscuits in a bag is 40 pounds with a standard…

A: Given, μ=40σ=6n=64 As per central limit theorem, the mean and standard deviation of the sample mean…

Q: 2. How much of the data can we estimate to be between x-values -2 and 102? There is approximately %…

A:

Q: Next Question The number of credits being taken by a sample of 8 full-time college students are…

A: We have to find correct answer..

Q: Section 5.4 (Please help with calculator TI-84) The mean height of women in a county (ages 20-29)…

A:

Q: Using the z-value -2.1,

A:

Q: (c) Find the probability that more than 68% of the sampled adults drink coffee daily. The…

A: The information provided in the question is as follows :-Sample size Also from the answers in part…