A recommendation for the amount of vitamin C that a person should have per day is 75 mg. A researcher believes that the mean dosage per day among vegetarians is greater than 75 and decides to test this claim by randomly sampling 120 vegetarians and computing the mean for the sample. C. What sort of results would you like to see to convince you that the researchers claim is likely to be correct? d.  In this context, what does statistically significant mean?

Q: Three years ago, the mean price of a single-family home was $243,768. A real estate broker believes…

A: Three years ago, the mean price of a single family home was $243768. A real estate broker believes…

Q: Answer the following statistic questions, name two different kinds of shapes that are a possibility…

A: Histogram is a graphical representation which organizes a group of data values into user-specified…

Q: Read the following information carefully and answer the corresponding questions. A study of the…

A: State the hypotheses.

Q: How many observations would fall beyond two sample standard deviations below and above the sample…

A: We know that , If observations of data is 2 standard deviation  below the mean then we will have…

Q: The P-value for a one-sided test for a mean is 0.06. The P-value for the corresponding two-sided…

A:

Q: Under what conditions can the mean of the sample be treated as a value that is from a population…

A: From the above data  under what conditions can the mean of the sample be treated as a value that is…

Q: c.    What is the mean of the sample means? d.    What is the standard deviation of the sample means…

A: Let  Mu = population mean  X bar = sample mean n = sample size  Sigma = population standard…

Q: If you wanted to know who was smarter “for his age" Nico, a 6 year old, or Sam a 74 year old, you…

A: Given Nico was 6 year old and Sam a 74 year old We wanted to know who was smarter for his age. For…

Q: For a negatively skewed distribution with a mode of X = 25 and a median of 20, what is the most…

A: Given information- Mode of X = 25 Median = 20 We have to determine the most likely value for the…

Q: You are given the following information for a sample (mean = 40; standard deviation = 10). What is…

A: According to the provided information:

Q: A random sample of 5 weeks showed that a cruise agency received the following number of weekly…

A: where, n=population size.

Q: According to Chebyshev's rule, within 10 standard deviations from the mean, lies at least_ data of…

A: According to Chebyshev's rule, within 10 standard deviations from mean, lies at least 99% of the…

Q: Angela polled her first grade class about their family pets. The following data lists the number of…

A:

Q: Which of the following z scores are above the mean? Choose all that apply.     0     1.35…

A: For normal distribution, the mean is equal to 0

Q: In a sample survey taken of 450 residents of a given community, 180 of them indicated that they shop…

A:

Q: What does Chebyshev’s rule say about the percentage of observations in any data set that lie within…

A:

Q: (d) Is it reasonable to assume that the above data come from a population that follows a normal…

A:

Q: For a measure of  body weight, converted to z or standard scores, what is the probability of having…

A: Solution For standard normal distribution, Mean=0  & standard deviation = 1. Find:

Q: According to Chebyshev's theorem, what is the maximum proportion of data values from a data set that…

A: We know that the Chebychev's inequality states that the P(|X-μ|>kσ) < 1/k2 It can be seen as…

Q: (e) How good was the Denver Broncos' 2013 NFL season compared to the rest of the football teams that…

A: We have to find out z score..

Q: A sports shop records the sales of items made in India and those made in Australia. Country of…

A: The standard deviation is the measure of variability from individual data values to the mean and…

Q: Below we have the mean fitness score and sample size for three samples of participants:   Sample…

A:

Q: on an intelligence quotient test with a mean score of 100 and a standard variation of 15, patrick…

A: Given: The value of mean is, μ=100. The value of standard deviation is, σ=15. The value of score…

Q: For a repeat measures desing t statistic, n= 9, Md=4.90, SS=72. What is the estimate standart error…

A: Given that,  n= 9, Md=4.90, SS=72 The value of standard deviation is,

Q: The following situations require inference about a mean or means. Identify each as (1) single…

A: Dependent t-test: The dependent t-test, also known as the “paired t-test” or “matched pair test”, is…

Q: Read the following information carefully and answer the corresponding questions. A study of the…

A: To test:H0:μ=1.4H1:μ≠1.4 Since, population standard deviation is not known, use t-test to check the…

Q: What does Chebyshev’s rule say about the percentage of observations in any data set that lie within…

A: a.We have to determine the percentage of observations in any data set that lie within six standard…

Q: The cost of a one-carat VS2 clarity, H color diamond from Diamond Source USA is $5600 (Diamond…

A: Solution :-

Q: Women stereotypically talk more than men do and researchers wondered how much more. Suppose a study…

A: Given, Women { nw=56 , x¨ = 18443 , sw = 7460}                Men { nm = 56, xm¯ = 16576, sm=…

Q: The following set of data is from a sample of n = 7:  12 7 4 9 0 7 3 answer the following questions…

A:

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: The college physical education department offered an advanced first aid course last summer. The…

A: d) If μ = 142    σ = 19Final score for each student = ?a) For Robert Ƶ = 1.26                      x…

Q: Ten patients at a doctor's surgery wait for the following lengths of times to see their doctor. 5…

A: Arranging the data in ascending order: 5, 8, 9, 11, 12, 15, 16, 17, 22, 55   n=10

Q: A researcher wishes to see if there is a difference between the mean number of hours per week that a…

A: Given,   X σ n No children 8.7 2.6 32 Children 10.6 2.9 32…

Q: For a given sample data set composed of 26 observations and E(x-x)2 225, then the standard deviation…

A:

Q: Explain how each of the following influences the value of the z-score in a hypothesis test a.…

A: The formula for z score in a hypothesis test is, z=x¯-μσn In the formula, x¯ is the sample mean, μ…

Q: What is the estimated standard error of the mean based on these sample data? Y -2 1 3 2 -1 0 4 6

A:

Q: If the variance of a national accounting examination is 900, how large a sample is needed to…

A: Solution

Q: he college physical education department offered an advanced first aid course last summer. The…

A: Given data, Students Z-score Robert 1.24 Juan 1.66 Haley -1.84 Joel 0.00 Jan -0.84…

Q: The mean response time on a task for 10 younger children (6-10 y.o.a.) is 45 and the mean response…

A: Mean response time on a task for 10 younger children (6-10 y.o.a.) is 45 Mean response time for 14…

Q: A guidance counselor wishes to determine the mean number of changes in academic major by college…

A: Given that, Standard deviation = 0.45 90% confidence level

Q: Women stereotypically talk more than men do and researchers wondered how much more. Suppose a study…

A: The sample size for women is 36, sample mean is 14704, sample standard deviation is 6215, and sample…

Q: Calculate the mean deviation (from mean) from the following data :

A: Here use formula of mean deviation

Q: You are asked to compare the means of two data sets, A and B, with standard deviations that are not…

A: Solution: Let nA be the number of measurements in data set A and nB be the number of measurements in…

Q: If you draw a sample of 200 from a normal distribution and using the empirical rule; how many data…

A: Empirical rule: On a normal distribution about 68% of data will be within one standard deviation of…

Q: Given that the mean of a set of data is 25 and the standard deviation is 3, what is the coefficient…

A: Given: Mean = 25 Standard deviation = 3

Q: A researcher wishes to see if there is a difference between the mean number of hours per week that a…

A: The given claim is that, male and female college students spend a different amount of time online…

Q: A sample of n=10 scores has SS=74.What is the estimated standard error for the sample mean?

A: Givensample size(n)=10sum of squares(ss)=74

Q: In the essay box, clearly answer questions 1-5 below: 1. Is this conducting a one-sided test or a…

A: Question 14: 1. The test is that there is a difference in the miles of intended use of the treadmill…

Q: A standardized memory test has a mean of μ=100 and a standard deviation of σ = 10. Answer the…

A: the PDF of normal distribution is = 1/σ * √2π * e ^ -(x-u)^2/ 2σ^2standard normal distribution is a…

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.