A survey of 16 popular restaurants is used to estimate the mean number of kitchen employees. Assume that the number of kitchen employees is normally distributed, which distribution should be used to construct the confidence interval? O Standard normal distribution Ot distribution with 15 degrees of freedom Ot distribution with 16 degrees of freedom ONeither standard normal distribution nor t distribution

Q: What z-score is equal to P38 ? Draw a normal curve as part of your work.

A: Here we use the standard normal distribution  To calculate the z score value.  P38 = p{z<  } is…

Q: What is the probabilty distribution of a statistic is called?

A: Given that, Probability distribution of statistic

Q: A typical normal distribution table only provides positive or negative values. This is because a…

A: A typical normal distribution table only provides positive or negative values. This is because a…

Q: 1 Why do two normal distributions that have equal standard deviations have the same shape?

A: In this case, we need to explain the reason for the two normal distribution with equal standard…

Q: What is the null distribution of the test statistic? How do we know if it is normal or not, and how…

A: Points on the sampling distribution of the sample mean: If the true population distribution of a…

Q: What is the special property of the standard normal distribution?

A: Standard normal distribution: The total area under the density curve is equal to 1.

Q: Why is the standard deviation of a sampling distribution smaller than the standard deviation of the…

A: According to information provided in the question, it is required to determine the reason why the…

Q: What are the conditions for using a normal distribution to approximate a binomial distribution?

A: In probability distribution, the binomial distribution is a discrete probability distribution with…

Q: Describe about the Properties of the Normal Curve?

A: A normal curve is identified using the values of the mean and standard deviation to show the…

Q: Can you describe the normal curve and explain why the normal curve in real-life distributions will…

A: Normal distribution: A normal distribution is the proper term for a probability bell curve. In a…

Q: Sales personnel for Skillings Distributors submit weekly reports listing the customer contacts made…

A: From the provided information, Sample size (n) = 15 Sample mean (x̄) = 16 Sample standard deviation…

Q: What proportion of a normal distribution is located between each of the followingz-score boundaries?…

A: Solution: 1. The proportion of a normal distribution is located between z=–0.25 and z=0.25 is

Q: Can a normal distribution always be used to approximate a binomial distribution?

A: we can use normal distribution to approximate a binomial t

Q: What z-score value separates the highest (top) 40% of the exam scores in a normal distribution from…

A: To find The z-score value that separates the highest (top) 40% of the exam scores in a normal…

Q: The distribution of sample means tends to be a normal distribution. true or false?

A: This question explores the characteristics of the distribution of sample means. Specifically, it…

Q: What is the sampling distribution in estimating the variance of a population? What are the…

A: The estimation population variance of the sampling distribution, or

Q: bility of getting be

A: mean = 9  standard deviation = 2.5 to find P(X<8)

Q: 2. A survey found that 73% of respondents currently have a job. Is 73% a statistic or a parameter?…

A: Given that  Sample proportion p^=0.73 Parameter is based on population.

Q: When do we use a t-statistic instead of a z-statistic to help infer a mean?

A: Hypothesis tests are used to test population claims. It has two population statements, where one is…

Q: For a normal distribution, what z-score value separates the lowest 20% of the distribution from the…

A: The z-score value separates the lowest 20% of the distribution from the highest 80% is, PZ<z=0.20…

Q: Assuming that the populations are normally distributed and the population standard deviations are…

A: A researcher is interested in comparing the resting pulse rate of people who exercise regularly and…

Q: Derive mean and variance of normal distribution.

A:

Q: Why is it that the “COVID curve” cannot be considered as a normal distribution?

A: COVID Curve cannot be considered as a normal distribution due to the following reasons:

Q: makes a distribution a normal distribution?

A: Properties of normal distribution  a) The mean , median and mode of a distribution is same it is…

Q: In a random sample of six mobile​ devices, the mean repair cost was ​$65.00 and the standard…

A:

Q: Estimate the value of IQR for a large SRS (simple random sample) of a random variable following a…

A: IQR is based on two quartiles, first quartile and third quartile. IQR stands for interquartile…

Q: How does the normal curve allow behavioral scientists to compare different types of scales, tests…

A: First understand normal curve : For normal curve,  the curve is bell-shaped and symmetrical. Zero…

Q: Define the chi-squared distribution?

A:

Q: On a normal curve, where do most scores fall?

A:

Q: What are the parameters for a normal curve?

A: Normal distribution: Normal distribution is defined based on mean (µ) and standard deviation (σ).…

Q: f the shaded region of the standard normal distribution that is going to the right is equal to…

A:

Q: Use the data on student load Student Unit Load 3, 12, 6, 9, 6, 12, 15, 12, 7, 9, 3   What is the…

A:

Q: With which normal distribution is the standard normal curve associated?

A: Standard normal distribution: If the mean and standard deviation of the distribution are 0 and 1…

Q: The distribution of sample variances tends to be a normal distribution. true or false?

A: The statement provided that the distribution of sample variances tends to be normal.

Q: Is it possible to be 100% confident when using a confidence interval to estimate a population…

A: