Karen wants to advertise how many chocolate chips are in each Big Chip cookie at her bakery. She randomly selects a sample of 38 cookies and finds that the number of chocolate chips per cookie in the sample has a mean of 18.2 and a standard deviation of 1.5. What is the 98% confidence interval for the number of chocolate chips per cookie for Big Chip cookies?a.) Which distribution table will be used to find the critical value and why?Z-table because the population standard deviation is knownZ-table because the population standard deviation is unknownt-table because the population standard deviation is knownt-table because the population standard deviation is unknownb.) With 98% confidence, we can say the true population mean of chocolate chips per cookie in Big Chip cookies is between and .Use 1 decimal place.

Name: Karen wants to advertise how many chocolate chips are in each Big Chip
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Description: Karen wants to advertise how many chocolate chips are in each Big Chip cookie at her bakery. She randomly selects a sample of 38 cookies and finds that the number of chocolate chips per cookie in the sample has a mean of 18.2 and a standard deviation

It is given that sample mean is 18.2 and standard deviation is 1.5.

Answered: Karen wants to advertise how many…

MATLAB: An Introduction with Applications

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ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

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Karen wants to advertise how many chocolate chips are in each Big Chip cookie at her bakery. She randomly selects a sample of 38 cookies and finds that the number of chocolate chips per cookie in the sample has a mean of 18.2 and a standard deviation of 1.5. What is the 98% confidence interval for the number of chocolate chips per cookie for Big Chip cookies?

a.) Which distribution table will be used to find the critical value and why?

Z-table because the population standard deviation is known
Z-table because the population standard deviation is unknown
t-table because the population standard deviation is known
t-table because the population standard deviation is unknown

b.) With 98% confidence, we can say the true population mean of chocolate chips per cookie in Big Chip cookies is between and .

Use 1 decimal place.

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

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