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Razzle Ice Cream is an ice cream shop chain that has locations all across the nation. Customers at Razzle Ice Cream have the option of ordering 1, 2, or 3 scoops of ice cream in their cone. The mean number of scoops ordered is μ=1.13, with a standard deviation of σ=0.59. Suppose that we will take a random sample of n=8 ice cream cone orders and record the number of scoops for each. Let x̅ represent the sample mean of the number of scoops for the 8 ice cream cone orders. Consider the sampling distribution of the sample mean x̅. Find the standard deviation of the sampling distribution of the sample mean (σₓ).

Question

Razzle Ice Cream is an ice cream shop chain that has locations all across the nation. Customers at Razzle Ice Cream have the option of ordering 1, 2, or 3 scoops of ice cream in their cone. The mean number of scoops ordered is μ=1.13, with a standard deviation of σ=0.59. Suppose that we will take a random sample of n=8 ice cream cone orders and record the number of scoops for each. Let x̅ represent the sample mean of the number of scoops for the 8 ice cream cone orders. Consider the sampling distribution of the sample mean x̅. Find the standard deviation of the sampling distribution of the sample mean (σₓ).

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Solution

The standard deviation of the sampling distribution of the sample mean (σₓ), also known as the standard error, can be calculated using the formula:

σₓ = σ/√n

where σ is the standard deviation of the population and n is the sample size.

Given in the problem, σ = 0.59 and n = 8.

Substituting these values into the formula gives:

σₓ = 0.59/√8 = 0.208

So, the standard deviation of the sampling distribution of the sample mean is 0.208.

This problem has been solved

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