Any normal distribution has a variance of one and a mean zero Select one: O True O False
Q: On average, a banana will last 6.9 days from the time it is purchased in the store to the time it is…
A: Given data is6.2, 6.2, 7.9, 6.4, 5.8, 6.3, 8.3, 7.1, 9.3, 8.2, 6.5, 9.4, 9.2sample size(n)=13α=0.10
Q: from
A: Let X be the random variable such that time that it takes for bananas to spoil x̅: Sample mean of…
Q: The appropriate statistical tool for predicting the value of a random variable based on the values…
A:
Q: A researcher wants to know if there is a difference between the mean amount of sleep that people get…
A: The ANOVA is conducted by using EXCEL. The software procedure is given below: Enter the data.…
Q: Compute the variance for the following data set. State your result as a decimal value with two…
A: The values are 1, 2, 3, 4, 5, 6. Variance can be calculated using the formula.
Q: Given a binomial variable with a mean of 30 and a variance of 21, what is p?
A: X~Binomial(n , p) Mean=30, Variance=21
Q: Find the mean and variance for the binomial distribution, P=0.37,n=22
A: Answer: From the given data, p = 0.37 and q = 1 - p = 1 - 0.37 = 0.63 sample size ( n )= 22
Q: Assume them to be a random sample from a normal population. Perform a hypothesis test at alpha =…
A: It is given that Sample size n = 10 Level of significance = 0.05 Test is that whether the variance…
Q: A machine that fills beverage cans is supposed to put 12 ounces of beverage in each can. The…
A: Here, the claim is that the variance differs from 0.01. That is, σ2≠0.01. The test hypotheses are…
Q: Is the variance for the amount shoppers spend on Saturdays at the mall the same as the variance for…
A: The sample variance for Saturday can be obtained using the excel formula “=VAR.S(A1:A13)”. From the…
Q: Find the mean and variance for the binomial distribution P=0.46 and n=25
A: Answer: From the given data, sample size(n) = 25 P = 0.46
Q: Assume that a randomly selected subject is given a bone density test. Those test scores are normally…
A:
Q: Nationally, about 11% of the total U.S. wheat crop is destroyed each year by hail. An insurance…
A: a) Suppose μ is the population mean percentage of wheat crop lost to hail.
Q: The 2021 World Happiness Report shows that the mean World Happiness Index is 5.533 with a variance…
A: Given,mean(μ)=5.533standard deviation(σ)=1.146
Q: On average, a banana will last 6.5 days from the time it is purchased in the store to the time it is…
A: Given Population follows normal distribution μ= population mea of banana not rotten after bought…
Q: Find the probability that a normally distributed random variable will fall within these ranges: 1.…
A:
Q: A population of grades for a statistics class of six students is given below: 90 65 70 85 86 70 Find…
A: given data : 90,65,70,85,86,70
Q: Find the mean and variance for the binomial distribution, P=0.56 and n= 8
A: Number of trials n=8 Success of probability p=0.56 X~binomial (n,p)
Q: A hospital wants to determine if the type of treatment for pneumonia is a factor in recovery time?…
A: Here the recovery time of various patients are given with different types of treatments. We have to…
Q: An amusement park ride has a bench seat designed for two passengers in each row. In this scenario,…
A:
Q: A random sample of the number of games played by individual NBA scoring leaders is shown. Is there…
A: The mean and variance is calculated as follows:
Q: The results of a statistics examination follow an approximate normal distribution with a mean of 68…
A:
Q: During annual checkups physicians routinely send their patients to medical laboratories to have…
A: Given data is 188,193,186,184,190,195,187,190,192,196sample size(n)=10
Q: Find the mean and variance using the following parameters of a binomial distribution, n = 32 and…
A: Answer: From the given data, The parameters of a binomial distribution are given as, n = 32 p = 0.26
Q: Which of the following statement is TRUE about negatively skewed distribution? a. mean = median =…
A: We want to tell the relationship between mean , median and mode of negatively skewed distribution
Q: Find the 2525 -th percentile for the standard normal random variable ZZ
A: For aa standard normal variable, mean is 0 and standard deviation is 1.
Q: A brewery claims that the mean amount of beer in their bottles is at least 12 ounces. Determine…
A: Given that, a brewery claims that the mean amount of beer in their bottles is at least 12 ounces.
Q: Nationally, about 11% of the total U.S. wheat crop is destroyed each year by hail. An insurance…
A: Hey, since there are multiple subparts posted, we will answer first three subparts. If you want any…
Q: Four salesman were posted in difference areas by a company. The number of units of commodity x sold…
A: Given: Test-statistic F = 3.89 Rejection region: If Test-statistic > Critical value, Reject H0.
Q: The cost of personal computers (PCs) follows an approximately Normal distribution with a mean of…
A: Given,mean(μ)=$435standard deviation(σ)=$51Let C = the cost of a PC.
Q: Find the mean and variance for the binomial distribution, P=0.45 and n=12
A: Answer:- Given, Sample size, n = 12 Probability of success on a trial, p = 0.45 Using formulas,…
Q: Find the mean and variance for the binomial distribution n= 50 and p= 0.25
A: Answer: From the given data, Using binomial distribution with parameters, n = 50 p = 0.25
Q: n average, a banana will last 6.8 days from the time it is purchased in the store to the time it is…
A:
Q: a.Two instruments are used to measure enzyme activity by colorimetry. You want to know if the…
A: Given: A B 0.86 0.87 0.82 0.74 0.75 0.63 0.61 0.55 0.89 0.76 0.64 0.7 0.81 0.69…
Q: A hospital wants to determine if the type of treatment for pneumonia is a factor in recovery time?…
A: From the given information we conduct ANO
Q: On average, a banana will last 6 days from the time it is purchased in the store to the time it is…
A: The question is about hypo. testing Given : Pop. avg. of a banana will last ( μ ) = 6 days Randomly…
Q: Find the mean and variance for the binomial distribution, P=0.13, n=19
A: Answer: From the given data, P = 0.13 Sample size(n) = 19
Q: Find the 42 -th percentile for the standard normal random variable Z
A: Solution Using standard normal table , P(Z < z) = 42% P(Z < z) = 0.42
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- If an experimental automobile prototype running at 50 miles per hour expends an average of 120 liters of fuel per hour, find the probability that the prototype will not expend between 100 and 150 liters of fuel if it runs for an hour. Assume the standard deviation is 25 and a normal distribution. 0.327 O 0.673 0.319 0.681Find the mean and variance for the binomial distribution, P = 0.65, n = 12On average, a banana will last 6.7 days from the time it is purchased in the store to the time it is too rotten to eat. Is the mean time to spoil greater if the banana is hung from the ceiling? The data show results of an experiment with 14 bananas that are hung from the ceiling. Assume that that distribution of the population is normal. 7.6, 6.2, 5.7, 7.9, 8.6, 7.9, 6, 6.7, 6.1, 5.8, 8.8, 8.1, 5.4, 5.6 What can be concluded at the the a = 0.01 level of significance level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: Select an answer H1: ? Select an answer c. The test statistic ? (please show your answer to 3 decimal places.) = d. The p-value (Please show your answer to 4 decimal places.) е. The p-valuе is (? f. Based on this, we should | Select an answer the null hypothesis. g. Thus, the final conclusion is that The data suggest the populaton mean is significantly more than 6.7 at a = 0.01, so there is…
- Solve the problem.Assume that mountain lions' weights are normally distributed with a mean of 62.6 kilograms and a standard deviation of 2.6 kilograms. If 70 mountain lions are randomly selected, find the probability that they have a mean weight between 61.9 kilograms and 62.8 pounds.On average, a banana will last 6.8 days from the time it is purchased in the store to the time it is too rotten to eat. Is the mean time to spoil greater if the banana is hung from the ceiling? The data show results of an experiment with 14 bananas that are hung from the ceiling. Assume that that distribution of the population is normal. 6.8, 6.4, 7.4, 7.5, 9, 7.9, 8.4, 9.5, 7.9, 7.4, 7.5, 9.4, 6.1, 7.4 What can be concluded at the the αα = 0.10 level of significance level of significance? For this study, we should use The null and alternative hypotheses would be: H0:H0: H1:H1: The test statistic = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.) The p-value is αα Based on this, we should the null hypothesis.Assume that admission test scores all follow a normal distribution. Al took the admission tests in three (3) universities. Here are the results Mean Standard Al's ... University Score Deviation Score A 450 40 510 B 100 20 150 200 30 254 in general, if an applicant's score reaches the top 10%, the applicant qualifies for an academic scholarship. In which university will Al qualify?
- Find the mean and variance for the binomial distribution P=0.33 and n=26In a log normal distribution. What is the expected value of the mean and the Std. And what is the varianceOn average, a banana will last 6.6 days from the time it is purchased in the store to the time it is too rotten to eat. Is the mean time to spoil less if the banana is hung from the ceiling? The data show results of an experiment with 13 bananas that are hung from the ceiling. Assume that that distribution of the population is normal. 6.3, 6.1, 3.9, 5.8, 4.7, 6.4, 7.5, 6.3, 7.8, 5.5, 5.5, 7.5, 7.4 What can be concluded at the the αα = 0.10 level of significance level of significance? For this study, we should use Select an answer t-test for a population mean z-test for a population proportion The null and alternative hypotheses would be: H0:H0: ? μ p Select an answer = < ≠ > H1:H1: ? p μ Select an answer ≠ = < > The test statistic ? t z = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.) The p-value is ? ≤ > αα Based on this, we should Select an answer reject accept fail to reject…