40% of Americans who travel by car look for gas stations and grocery stores that are nearby or visible from the road. Suppose a random sample of n = 25 Americans who travel by car are asked how they determine where to stop for food and gas. Let x be the number of the sample that responds that it looks for gas stations and food stores that are close to or visible from the road. Use the binomial formula to solve the exercise  a) What is the mean if x = 10? b) What is the variance of x? c) Find the interval 2. d) What are the values ​​of the binomial random variable x fall in this interval?

Q: Wallace asked 30 participants to report on their political affiliation by marking "1" for liberal,…

A: Given that 30 participants  For liberal 1  For conservative 2  For not interested in poltics at all…

Q: If H, is false, the true or actual mean is equal the hypothesized mean, µ = µo %3D O True O False

A: From the above data the correct answer is  False

Q: Using z scores, a population with u = 37 and o = 6 is standardized so that the new mean is u = 50…

A:

Q: A sample of n = 5 scores has a mean of M = 9. What is EX for this sample? %3D %3D

A: Given: Sample size = n = 5  Mean = M = 9 We have to find ∑X for the given data.

Q: A positive value of z indicates that the number of standard deviations of an observation is to the…

A: Objective of this question is that which option is the correct choice.

Q: Ten percent of the world's population is left-handed. A researcher claims that left-handed…

A:

Q: there sufficient evidence to indicate that the average diameter of the tendon for patients with…

A: from the given information : population mean,μ= 5.96 sample size, n = 31 sample mean, x̄ = 9.5…

Q: sed on data from the U.S. Bureau of Economic Analysis). Tom ns to open a Cadillac car dealership and…

A: The claim is that the sample was drawn from a population with mean 13901. The null hypothesis is,…

Q: What will result if we conclude that the mean is greater than 56 when its true value is really 58?…

A:

Q: Solve the problem. 21) Person A makes 10,000 dollars a month in a company, for which the mean is…

A:

Q: Suppose the mean of X is 16. What is the mean of Y if Y=1.27*X? (Use two decimal places, ex: 12.34)

A:

Q: During rush hour, the traffic speed on a busy highway is found to have mean 42 mph and standard…

A:

Q: What is the of the mean 0. P(X=x) 0.15 0.20 0.15 0.50 3.

A:

Q: A score that is 3 points lower than the sample mean has a z-score of z = -0.25, and a score of X =…

A: Given information: Case-1: z = -0.25  Score (X) = u-3  Sample mean (u) = u  Case-2: z = -0.75  X =…

Q: A population has a stand. dev. of 24. on average, how much difference should there be between the…

A:

Q: None

A: Understanding the Experimental Design:This study employs a two-independent-samples t-test design.…

Q: In testing for the differences between the means of two independent populations, you assume that the…

A: In testing for the differences between the meanings of two independent populations, we assume that…

Q: (b) Based on your sample, graph the 99% confidence interval for the population mean of all the…

A:

Q: A population of N= 23 scores has a mean of u = 5. After one score is removed, the mean is found to…

A: Given that - A population of N= 23 scores has a mean of u = 5. After one score is removed, the mean…

Q: How likely it is that a mean from a particular sample is representative of the population is defined…

A: Given Options: t-score F-statistic z-score p-value A p-value is a statistic that is used to test a…

Q: The estimate of the standard error of the mean is computed as?

A:

Q: If H, is false, the true or actual mean is equal the hypothesized mean, u = Ho True False

A:

Q: A population of N= 10 scores has a mean ofµ=6. After one score is removed, the mean is found to be…

A:

Q: In Sampling a large number of chocolate cake manufactured by a machine, the mean humber of defective…

A:

Q: population of N = 10 scores has a mean of µ = 6. After one score is removed, the mean is found to be…

A: given data  population size (N) = 10 population mean ( μ) = 6 after removing one score : new mean =…

Q: Assume the data are minutes too late to statistics class of five consecutive days. X  12 23 15…

A:

Q: The claim is that the proportion of adults who smoked a cigarette in the past week is less than 0.25…

A: Given,n=1908x=439p^=xnp^=4391908=0.2301

Q: 3) Draw Q-Q plot of the data set X. Interpret your result related with the normal distribution.

A: 3) Given that, The data on midterm result (X) and final exam result (Y).

Q: (a) Find the mean of p, wherep is the proportion of left-handed individuals in a random sample of…

A: Let p be the proportion of left-handed people. Given that p = 12 % = 0.12 Sample size is n = 1650.

Q: Which of the following statements are true? |. In a data-set that is symmetric, the mean is…

A: Type of skewness:  Symmetric: If the distribution is said to be symmetric if the shape of the…

Q: A researcher believes there is a difference in the mean number of days before visible results begin…

A: let's set up the null hypothesis and alternative hypothesis null hypothesis: there is no difference…

Q: 2. It is believed that the mean number of dogs owned by dog-owning households s= .29. Carry out an…

A:

Q: Derive mean of gamma distribution.

A:

Q: A sample of n=11 scores has a mean of M=9. If one new person with a score of X=4 is added to the…

A: Given that, A sample of n=11 scores has a mean of M=9. One new person with a score of X=4 is added…

Q: Using z scores, a population with u = 37 and o = 6 is standardized so that the new mean is u = 55…

A: Given : Original population  Mean=37 Standard deviation =6   After standardization  Mean=55 Standard…

Q: The data of the number of ‘centuries’ i.e. a scores of 100 runs or more, scored by players at a…

A: The mean value can be calculated using the formula: Here, xi is the value of the variable 'number…

Q: an ahnual salary for tenured college professors at a certain college is $50,00. o-$1,800. Answer…

A:

Q: ple of n = 15 scores has a mean of M = 6.  One person with a score of X = 22 is added to the sample.…

A: The mean formula is, Mean = Sum of all observations/ Total observations, Given: Mean (M) = 6 Total…

Q: What is Ha?

A: (H0 is the mean VIQ scores for the younger, middle-aged, and older subjects are all not different…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.