the sample proportion who bought a ticket would vary from sample to sample. The sampling distribution would be close to normal with a mean of 0.6 and a standard deviation of___ A)0.4899 B)0.0251 C)0.00016 D)0.0126

Q: Previously, an organization reported that teenagers spent 4.5 hours per week, on average, on the…

A: The sample of teenagers time is 3.0, 4.25, 5.5, 3.5, 7.0, 6.3, 2.0, 4.5, 3.7, 3.6.

Q: . A developmental psychologist is interested in studying how long babies gaze at a photograph of a…

A: Data given n=6, 10, 13, 16, 16, 20, 24

Q: A 2016 Pew Research poll found that 18% of cell phone owners use their phone for conducting…

A: It is given that the total number of cell phone uses are 18%, thus the population proportion is…

Q: Two out of 8 students at a local college say that they skip dinner in the evening. Find the mean,…

A: Given that  Success of probability p =2/8=0.25 Number of trials n=20 X~binomial (n,p)

Q: Suppose 4 percent of the children in the US are thought to be near the juvenile diabetes threshold.…

A:

Q: Find the test statistic for this hypothesis test. z= (Round to two decimal places as needed.)

A:

Q: If a population has a mean of 2.5, what is the mean of the sampling distribution if the sample size…

A: Introduction: It is required to find the mean of sampling distribution of the mean, when a sample of…

Q: If the mean of a random variable is 30 and the standard deviation is 6, and three consecutive data…

A: It is given that, Mean,μ=30 Standard deviation,σ=6

Q: a) Verify that the conditions for the use of the normal model are met using the 2015 study. b) Why…

A: Given Information: Sample size n=100 Sample proportion p^=0.62 Hypothesized value of population…

Q: An SMR over 100% ( i.e.,171 %) indicates that the "healthy worker effect" may be an issue in the…

A: Given::- An SMR over 100% (i.e., 171%) indicates that the "healthy worker effect" may be an issue in…

Q: If you randomly sampled a normally - distributed population and obtained ten observations with a…

A: It is given that the population distribution is normal. If the population is normal, then the sample…

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

A: According to the definition of estimation, a sample mean is equal to the population mean.

Q: e reject the null hypothesis and conclude that there is sufficient evidence at a 0.10 level of…

A: Given data number of success , x= 20.0 sample size, n = 540 population…

Q: The Weather Channel (TWC) is one of the most popular cable TV networks. Who hasn't seen Jim Cantore…

A: Hypothesis:  H0: p1=p2H1 :p1≠p2 n1=1000,  x1=446 p1=4461000 = 0.446 n2=1500,  x2=303 p2=3031500 =…

Q: If a population has a mean of 3.5, what is the mean of the sampling distribution if the sample size…

A: Given,sample size(n)=4population mean(μ)=3.5

Q: If we have a data set containing the age and marital status of large group of individuals and we ask…

A: Independent samples t test: The independent samples t-test can be used to examine a possible…

Q: Suppose the annual salaries for sales associates from a store have a symmetric and unimodal…

A: Solution

Q: Suppose a population has a mean happiness score of 75 and a standard deviation of 15. Researcher A…

A:

Q: A recent study investigated the population density of burrowing owls in the Imperial Valley. In this…

A: We want to find 90% confidence interval for population mean

Q: stimated that only 2% of high school athletes receive even a partial athletic scholarship to…

A: Given data,p=2% =0.02n=500Find variance and standard deviation?

Q: Twittering away The Pew Internet and American Life Project asked a random sample of 2253 U.S.…

A: Given Information: Sample size n=2253 Sample proportion p^=0.19

Q: Ho :p = 0.026 H. P 0.026

A: Given : Let p be the proportion of American women

Q: A researcher is interested in exploring the relationship between calcium intake and weight loss. Two…

A: n1=n2=28 X1-bar=15.2 X2-bar=12.3 S1=2.5 S2=1.9

Q: If it is known that a town with population 30,000 had 3,170 people who drive a Prius hybrid vehicle.…

A: Solution: The proportion of population who drive a Prius hybrid vehicle is From the given…

Q: Given a normal population with mean = 39 and variance = 16, what is the probability of obtaining an…

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 U.S. Federal Bureau of Investigation compiles data on crimes and crime rates. A violent crime is…

A: 1) It is given that, the relative Frequency distribution for Violent crimes in 2010 is, Murder…

Q: 2. Paired Sample: A health educator wants to evaluate the effects of a dental film on the frequency…

A:

Q: A coffee shop gets its stock of bagels for the day delivered from a baker in the morning before…

A:

Q: According to a dietary study. high sodium in take may be related to ucers. stomach cancer, and…

A:

Q: What percentage of Contra Costa County adults supports a ban on assault-style weapons? Suppose that…

A: Since, we answer only up-to three subparts, we'll be answering the first three subparts. Please re…

Q: Suppose 36% of movie goers say comedy is their favorite genre. If a random sample of 120 movie goers…

A: Obtain the mean number of movie goers that prefer comedy. The mean number of movie goers that prefer…

Q: n this social networking site differ by gender? The following sample data show the number of women…

A:

Q: A researcher is interested in exploring the relationship between calcium intake and weight loss. Two…

A: Given Data : For Sample 1 x̄1 = 10.4 n1= 26 s1= 2.6 For Sample 2…

Q: IS IT REASONABLE TO ASSUME THIS SAMPLE CAME FROM A NORMAL POPULATION?

A: we need to answer, if it is reasonable to assume the given sample came from a normal population.