erage weekly earnings of the plumbers in a city are $932 with a population standard deviation of $24. Assume that we select a random sample of 63plumbers.a) What is the sampling distribution of the mean weekly earnings of plumbers? (i.e. What is the sampling distribution ofx̅?)b) Find the probability that the sample mean weekly earnings will be between$925

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A: Solution To find probability we will use excel.

Q: Which of the following describes the sampling distribution of the sample mean?

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A: Given Information:Sample proportion() = 60% =0.6Sample size (n) = 185

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A:

Q: Use normalcdf command to answer the questions below. A college’s data about incoming freshman…

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A:

Q: 2. A grocery store's receipts show that individual Sunday customer purchases have a very skewed…

A:

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A: here given , The scores of individual students on the American College Testing (ACT) Program…

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A:

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Q: 4. The monthly utility bills in a city are normally distributed with a mean of $100 and a standard…

A: It is given that the mean is 100 and standard deviation is 12.

Q: Use the Central Limit Theorem to find the mean and standard error of the mean of the sampling…

A: Given : μ = 223 , σ= 55 and n= 29

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A: According to the given information in this questionWe need to answer two parts

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A:

Q: A pharmacist finds that 55% of allcustomers prefername brand prescription drugs to generic…

A: "Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

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A: Given data is  a. 6 2 1 4 6 5 b. 11.2 10.0 25.4 8.4 11.0 c. 13 11…

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A: Z-Score:             It is a dimensionless quantity that is used to indicate the signed, fractional,…

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A: The mean is 51, and the median is 51.

Q: 1. An unknown distribution has a mean of 35 and a standard deviation of 6. Samples of size n = 40…

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Q: The average final exam score for the statistics course is 75%. A professor wants to see if the…

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Q: Assume the weight of groundhogs are approximately normally distributed, with a mean weight of 8.6…

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A: Given: μ=234σ=67n=26

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Q: What graphs can help us identify a normal distribution? a. Dotplot b. Histogram c. Boxplot d.…

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Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.