Suppose that from the past experience a professor knows that the test score of a student taking his final examination is a random variable with mean 60 and standard deviation 8. How many students would have to take the examination to ensure, with probability at least 0.94, that the class average would be within 1.5 of 60?

Q: Suppose that in a certain Senior High School the average height of male students is 155.9 cm with…

A: GivenMean(μ)=155.9standard deviation(σ)=20.4sample size(n)=40

Q: For a standardized psychology examination intended for psychology majors, the historical data show…

A:

Q: In 1999, the murder rates (per 100000) for the 50 states and the District of Columbia had a mean of…

A: Given mean is 5.9 and standard deviation 6.3 sample size is 5

Q: A sample of 235 students was taken for an exploratory study. Each member of a random 35 of these…

A: Since the sample size is sufficiently large, and the population standard deviation is known, the…

Q: Suppose that you take a random sample of 30 healthy American men... What is the z-score…

A: The mean is 82 and the standard deviation is 10.

Q: For a standardized psychology examination intended for psychology majors, the historical data show…

A:

Q: For a standardized psychology examination intended for psychology majors, the historical data show…

A: From the given information,   Mean = 520 Standard deviation = 180 Sample size = 35   The objective…

Q: For a standardized psychology examination intended for psychology majors, the historical data show…

A:

Q: A particular telephone number is used to receive both voice calls and fax messages. Suppose that 25%…

A: Note: Since you have posted multiple question, we will solve the first question for you. If you want…

Q: Suppose the scores, on a college entrance examination are normally distributed with a mean of 1000…

A: We have given that Suppose the scores, on a college entrance examination are normally distributed…

Q: For a standardized psychology examination intended for psychology majors, the historical data show…

A: Given: Mean μ = 500 Standard deviation σ = 170 Sample size n = 40 Sample mean X = 526 Formula used:…

Q: Suppose the life spans of a particular brand of car battery are normally distributed with a mean of…

A: We have given that  Mean=45.3

Q: For a standardized psychology examination intended for psychology majors, the historical data show…

A: From the provided information, Mean (µ) = 500 Standard deviation (σ) = 170 X~N (500, 170) Here X be…

Q: Suppose a batch of steel rods produced at a steel plant have a mean length of 178 millimeters, and a…

A: From the provided information,Mean (µ) = 178Standard deviation (σ) = 12Sample size (n) = 76

Q: Suppose student test scores for a nationwide standardized test have an unknown distribution with…

A: Given M = 259 standard deviation = 33 x = 264.3      To determine,  What is the probability that the…

Q: For a standardized psychology examination intended for psychology majors, the historical data show…

A:

Q: ading pr e probab r interme

A: The information provided in the question are as follows :- Population mean (μ)=500 Population…

Q: For a standardized psychology examination intended for psychology majors, the historical data show…

A: Given that  Mean = 515  Standard deviation = 170 Sample size = 35

Q: For a standardized psychology examination intended for psychology majors, the historical data show…

A:

Q: Suppose that the distribution for total amounts spent by students vacationing for a week in Florida…

A: Answer:- Given     X ~ N(μ, σ )                      Where mean μ   = 650        &    standard…

Q: For a standardized psychology examination intended for psychology majors, the historical data show…

A:

Q: Suppose the scores, x, on a college entrance examination are normally distributed with a mean of…

A: Solution: Let X be the score on a college entrance examination. From the given information, X…

Q: For a standardized psychology examination intended for psychology majors, the historical data show…

A: μ = 505σ = 170n= 40P(x¯≥528) = ?      here n>30, as per CLT sampling distribution will be normal.…

Q: Suppose the scores, X, on a college entrance examination are normally distributed with a mean of…

A:

Q: Suppose the number of items you can deliver in a day is a random variable with some unknown…

A: Given Mean, μ =35           Standard deviation, σ =8           n = 36 Let X be the number of items…

Q: What is the probability that a sample of 35 exams will have a mean score of 518 or more if the exam…

A: For a standardized psychology examination intended for psychology majors, the historical data show…

Q: For a standardized psychology examination intended for psychology majors, the historical data show…

A:

Q: Suppose a population distribution has a mean  = 150 and a standard deviation s = 30, and you draw a…

A: Given: Mean = μ = 150 Standard deviation = σ = 30 n = 100

Q: For a standardized psychology examination intended for psychology majors, the historical data show…

A:

Q: Suppose that from the past experience a professor knows that the test score of a student taking his…

A: Mean()=61standard deviation()=8.5

Q: If Y is a random variable with a mean of 30 and a standard deviation of 10, what is the probability…

A: Let Y be the random variable from normal distribution with mean (μ) = 30 and standard deviation (σ)…

Q: Suppose a batch of steel rods produced at a steel plant have a mean length of 178 millimeters, and a…

A: given dataμ=178σ=12n=76 here sample size n≥30  so as per CLT we can assume that distribution is…

Q: Suppose scores on an examination are normally distributed. If the examination scores have a mean 60%…

A:

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.