Suppose you have a sample of 10,000 potential customers and 1992 would buy the product.  Calculate  the test stat for testing the claim the proportion is less than 20%  also use wolframalpha.com to calculate the Pvalue using the test stat  enter  probability Z distribution < test stat  so if the test stat is -1.3 enter  probability Z distribution< -1.3  into wolframalpha.com  a. The pvalue is 0.42 b. The z test stat for one sample proportion is -0.100 c. The pvalue is 0.52 d. The z test stat for one sample proportion is -0.200

Q: Explain Student t distribution &amp; F distribution?

A: Student t distribution: Shape of a student’s t distribution is bell shaped curve with mean zero and…

Q: Psychology students at a university completed the anxiety Scale questionnaire. Scores on the scale…

A: Given Data : Population Mean,μ = 10.5 Population Standard Deviation,σ = 2.0

Q: Assume that the total cholesterol levels for adults are normally distributed with mean cholesterol…

A: Given data: Mean =  51.8 mg/dL Standard deviation  = 14.3 mg/dL To find: Find the probability that…

Q: Explain t Distribution? &amp; it's Prerequisites?

A: From the given question, The student’s t-distribution can be defined as:

Q: We are interested in the mean migration distance of Canadian geese. Suppose that we know that the…

A: Sample size n =25 Population mean μ =2500 Population standard deviation =250

Q: What are other sampling distributions for mean?

A: Sampling distributions : The probability distribution of a given statistic based on a random sample.…

Q: 1.29% of fly balls are hit further than what distance? • What distribution will you use to calculate…

A: 1)We have given that theMeanµ = 269Standard deviationsσ = 71Let X be a random variable denoting…

Q: What are the requirements needed to be a binomial distribution?

A: To find: What are the requirements needed to be a binomial distribution?

Q: What is the mean of the sample distribution? What is the R code to find the probability that this…

A: The population mean: μ=2500 Standard deviation: σ=250 Sample Size: n=25

Q: A fair coin is tossed 60 times. Find the probability that the head appears between 20 and 40 times…

A: X~Bin(n=60, p=0.5) P(20&lt;X&lt;40)= ?

Q: The September energy consumption levels for single-family homes are found to be normally distributed…

A: The objective of this question is to find the probability that the September energy consumption…

Q: The average wait time to get seated at a popular restaurant in the city on a Friday night is 14…

A: The hypotheses to be tested are:H0: μ = 14, that is, the population mean is 14.Versus:H0: μ ≠ 14,…

Q: For males born in upstate NY, the gestation times are normally distributed with a mean of 39 weeks…

A: Given, for males born in upstate NY, the gestation times are normally distributed with a mean of 39…

Q: Computers are commonly used to randomly generate digits of telephone numbers to be called when…

A: No, we cannot use the methods of this section, because the distribution of randomly generated…

Q: Derive the negative MGF of binomial distribution

A: We have to derive mgf(moment generating function) of binomial distribution.

Q: Prepare a distribution table and probability histogram for the number of 3s when a die is rolled…

A:

Q: Let x be a random variable representing the SAT math score of student. We may assume that x has a…

A: Given Information: Population mean (u) = 650 Sample mean (x) = 645 Sample size (n) = 75 Population…

Q: What are the functions of sampling distribution?

A: A sampling distribution is a distribution of the likelihood of a statistic derived from a greater…

Q: Provide an example of a distribution set that you would expect to generate results that are Skewed…

A: The skewed right distribution is one of the tails is on the right side of the graph. The peak lies…

Q: True or false: As the degrees of freedom decrease, the Student's tdistribution becomes more like the…

A: As the degrees of freedom decrease, the student's t-distribution becomes more like tends to the…

Q: a) A case study has been conducted by researcher at UTHM to study the fatality causes and trend in…

A: Hello! As you have posted 2 different questions, we are answering the first question. In case you…

Q: what the requirements are to assume that the sampling distribution of sample means does have a…

A: The objective of this question is to understand the conditions under which we can assume that the…

Q: 1. There is a population of scores with a mean of u = 40 and a standard deviation of o = 12. Imagine…

A: As per our guidelines we are supposed to answer only one question and 3 sub-parts of that question…

Q: When the degrees of freedom is large, the t distribution becomes?

A: Given  When df is large  Then t distribution transform into ?

Q: What is the difference between uniform distribution and binomial distribution?

A: The two distributions which are given are Uniform distribution and Binomial distribution.

Q: Which is correct for a distribution that is skewed to the left?

A:

Q: Can we use the Normal distribution to calculate probabilities for the weekly income of an individual…

A: From the Histogram, Data is right skewed There is no symmetry Low income - more students High income…

Q: The Sky Train from the terminal to the rental car and long-term parking center is supposed to arrive…

A: The Sky Train from the terminal to the rental car and long-term parking center is supposed to arrive…

Q: 1.07 for all students who have ever attended the college. Find the probability a student at random…

A: Let X be the GPA of college students.Let us assume that X is normally distributed with mean 2.82 and…

Q: When do we use a mean and SD to define a continuous variable distribution?

A: Given information: For a continuous variable distribution with specified mean and standard…

Q: The average number of cavities that 30-year-old Americans have had in their lifetimes is 9. Do…

A: From the provided information, Sample size (n) = 16 Level of significance (α) = 0.10

Q: The choice of classes in a histogram can change how the distribution appears has no impact on the…

A: A histogram is a graphical representation of quantitative data used to classify data into grouped…

Q: Fast Auto Service provides oil and lube service for cars. It is known that the mean time taken for…

A: Normal distribution is a continuous distribution which has many real life applications. Normal curve…

Q: Assume that the total cholesterol levels for adults are normally distributed with mean cholesterol…

A:

Q: Find X3.05 for x² distribution with 10 degrees of freedom.

A: To find the critical value for given for χ2-distribution. df = 10 Probability = 0.05