3.) I want to estimate the mean number of minutes that a 7-year-old watches TV daily. How many kids should I poll in order to be 99% confident that I am within 15 minutes of the actual time? Assume o = 45 min.

Q: Among all the children in the playground, 95.4% are between 1.1 m and 1.7 m tall. Assuming that the…

A: Explanation:Here given the between values and calculate the mean and standard deviation In step2…

Q: Assume the cholesterol levels in a certain population have mean µ= 200 and standard deviation σ =…

A: According to the given information in this question We need to find z score for a sample mean of 180…

Q: One sample has n = 6 and M = 10. A second sample has n = 4 scores with M = 15. If the two samples…

A: Combined mean = n1x1¯+n2x2¯n1+n2

Q: If n=185, x=5.82, s= 2.16. Is the claim correct that the mean is less than 6.00 with a significance…

A: n=185  , x=5.82 , s=2.16 Null Hypothesis : Statement with no significant difference in the…

Q: In a sample of n=6 scores, five of the scores are each one point above the mean. Where is the sixth…

A:

Q: In sampling a large number of parts manufactured by a machine, the mean number of defective in a…

A: Givensample size(n)=20probability…

Q: A researcher wishes to estimate the number of households with two types of vegetables in their…

A:

Q: .In sampling a large number of electronic chips manufactured by a machine, the mean number of…

A: First we have to find the probability of atleast 3

Q: Past records suggest that the mean annual income,  μ1 , of teachers in state of California is less…

A: State the hypotheses. That is, there is no sufficient evidence to reject the claim that the mean…

Q: When is the desired mean, m , used in establishing the center-line of a control chart instead of x ?

A: Normally during the methodology for drawing control charts, samples are drawn from a stable process…

Q: Given the interval estimate for the mean (9.2, 18.8), the point estimate for the mean is and the…

A: The given interval estimate for the mean is (9.2, 18.8).

Q: For a data set of 133 values, a histogram created based on Sturge's Rule would have how many bins?

A: Given information: Number of observations. in data set = 133 Sturge's Rule is method of choosing the…

Q: After surveying 625 potential voters polled, you find out that 325 support candidate X and 300…

A: Given information: A total sample of 625 potential voters. 325 out of 625 support candidate X. 300…

Q: Assume that blood pressure readings are normally distributed with u = 124 and o = 9. A researcher…

A: Consider X be the random variable representing the blood pressure readings. X follows normal…

Q: 0. 1. Calculate mean from the raw-data collected by Mr. X, of 10 students and the following height…

A:

Q: Given the interval estimate for the mean (6.2, 17.6), the point estimate for the mean is , and the…

A: Given information- We have given the confidence interval estimate for the mean = (6.2, 17.6) We have…

Q: Given the interval estimate for the mean (5.2, 14.4), the point estimate for the mean is and the…

A:

Q: A distribution of scores has a mean of 51.5, a median of 51.2, and a mode of 51. Based on this…

A:

Q: - Suppose the Department of Energy in the Philippines surveyed 200 gasoline stations to determine…

A: a)In the given case, gasoline at all the gas stations is the population whereas the gas stations…

Q: One sample of n = 4 scores has a mean of M = 12, and a second smaple with n = 6 scores has a mean of…

A:

Q: given a population of 5000 scores with mean is 86 and the standard deviation is 10, how many scores…

A: To solve this problem, we have to assume that the population is normally distributed. Let X denotes…

Q: Given the interval estimate for the mean (8.2, 18.6), the point estimate for the mean is and the…

A: Obtain the value of the point estimate of mean.   The value of the point estimate of mean is…

Q: Consider a data set that has a mean of 20.3 and a standard deviation of 6.4. According to…

A: Given information- Population mean, µ = 20.3 Population standard deviation, σ = 6.4 We have given…

Q: Past records suggest that the mean annual income, u, of teachers in state of Utah is greater than or…

A: State the hypotheses.   Determine the type of test statistic used.   The type of test statistic…

Q: Suppose a researcher is trying to understand whether people who purchase fast-food hamburgers would…

A: Null and alternate hypotheses: The investigator is interested to test whether the population mean is…

Q: ple of 1000 Americans, it was discovered that 920 of them lived in neighborhoods with acceptable…

A: The point estimate (sample proportion) of the sample of size n can be defined as: p^=xn  Here, x =…

Q: Consider a data set that has a mean of 33.7 and a standard deviation of 6.8. According to…

A: Suppose X is a random variable with expectation, μ and standard deviation, σ. Then, for any positive…

Q: Jason's z- score in the 10-k run was -3. if the raw score standard deviation was 5, and the mean…

A:

Q: Suppose that in a large class, the instructor announces that the average grade on an exam is 75.…

A: In a large class, the instructor announces that the average grade on an exam is 75. The two…

Q: Past records suggest that the mean annual income, u, of teachers in state of New York is less than…

A: Let X : annual income of 15 teachers from New york Y : annual income of 15 teachers from Illinois :…

Q: Assuming statistical testing was performed, what three items should be on every chart (in small…

A: A hypothesis test is carried out on the null hypothesis to determine if we have sufficient evidence…

Q: Given the interval estimate for the mean (8.2, 11.4), the point estimate for the mean is and the…

A: Given information- We have given the confidence interval estimate for the mean = (8.2, 11.4) We have…

Q: One common system for computing a grade point average (GPA) assigns 4 points to an A, 3 points to a…

A: The weighted mean value of any random variable X can be given as, Weighted mean=∑i=1nWi·Xi∑i=1nWi.…

Q: Given the interval estimate for the mean (5.2, 17.8), the point estimate for the mean and the margin…

A: Given, The interval estimate is      (5.2,17.8)

Q: Previously, an organization reported that teenagers spend 8.5 hours per week, on average, on the…

A: Given information: The data represents the number of hours per week teenagers spend on the phone.

Q: how many subjects are needed to estimate the mean number of books read the previous year with six…

A: It is given that confidence level is 0.90, standard deviation is 11.3 and margin of error E is 6.

Q: a sample of n=300 male college freshmen has a mean weight of 160 with a standard devation of 11. how…

A: It is given that the weight of freshmen follows normal distribution with mean of 160 and standard…

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

A: The provided information are:

Q: An engineer wishes to determine the width of a particular electronic component. If she knows that…

A: Standard Deviation = σ = 1.4 Margin of Error = E = 0.3 Confidence Level = 90

Q: 4. What is the range of data values that would allow 99% of the fall within the mean? 5. Why does…

A: “Since you have mentioned the question number 4 and 5, we will solve that question for you. If you…

Q: 3. A principal wishes to estimate the average number of hours students spend doinghomework per…

A: Given that  The standard deviation of the previous study (σ) = 4.5 hours Confidence level (C) = 95%…

Q: The manager of a city recreation center wants to estimate the percent of city residents who favor a…

A: The confidence interval for the population proportion (single sample) is obtained by using the…

Q: Given the interval estimate for the mean (5, 15), the point estimate for the mean is ________, and…

A: Solution: From the given information, the interval estimate of the mean is (5, 15). Then, the point…

Q: Consider a data set that has a mean of 95.5 and a standard deviation of 13.1. According to…

A:

Q: Find the Mean and Standard Deviation for the prompts below: 5.)  A survey found that 86% of…

A: 5. Given: p=0.86n=121-p=0.14 The probability that 10 or more would have never been the victim of a…

Q: 85

A: Given: Mean, μ=75 Standard deviation, σ=12 X = 85

Q: A sample of n = 16 scores is selected from a population with μ = 80 with σ = 20. On average, how…

A: From the provided information, it is known that

Q: Fifty people are selected randomly from a certain population and it is found that 12 people in the…

A: Sample size = n = 50 Sample number of events = x = 12 Sample proportion = p̂ = x/n = (12/50) =…

Q: Who is taller with respect to their own gender? (Men have a mean height of 70.4" with SD 3.0" and…

A:

Q: Given the interval estimate for the mean (9.2, 13.4), the point estimate for the mean is _______ ,…

A: The given interval estimate for the mean is (9.2, 13.4).The margin of error is calculated below:

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.