Never Married People The percentage of males  18  years and older who have never married is  30.4 . For females the percentage is  23.6 . Looking at the records in a particular populous county, a random sample of  250  men showed that  73  had never married and  50  of  200  women had never married. At the  0.05  level of significance, is the proportion of men greater than the proportion of women? Use the  P -value method and let  p1  be the proportion of men.

Q: For a sample with s = 9, a score of X 67 corresponds to z =+1.00. What is the sample mean? %3D O M=…

A: Solution

Q: A College Alcohol Study believes that there is a difference in the percentage of women and men that…

A: Given that, n1=1000,n2=1000 The type of test is two tailed test The value of test statistic is, z =…

Q: find the test value used to test the claim that the proportion of jellyfish stings at jones beach is…

A: Given, Sample size = 696 Sample proportion = 0.30   The null and alternative hypothesis is:

Q: The proportion of all high school students who watch national news is p = 0.47. A random sample of…

A: Given n = 50 p = 0.47 Therefore,  np = 50×0.47 = 23.5 n(1-p) = 50(1-0.47) = 50(0.53) = 26.5

Q: Find the estimated standard error for the sample mean for n = 12 and SS = 3843. Nearest hundredths…

A: Given : n = 12  ss = 3843

Q: What is the P VALUE? H(0) P= .68 H(A) P> .68 Sample size of 46.  63 People were surveyed. 48…

A:

Q: Suppose you select a simple random sample of 75 Douglas College students, and you find that 8 are…

A: The point estimate of the population proportion is the sample proportion. Given that, 8 out of the…

Q: The racial distribution for the state of Texas is shown below.   Race White Hispanic Black Other…

A: Given - H0:  The racial distribution at my college is the same as the racial distribution for the…

Q: Find the estimated standard error for the sample mean

A: Here  n = 14 and SS= 4238.

Q: The proportion of students at a large high school who live within five miles of the school is p =…

A: Given: Proportion of students who live within five miles of the school, p=0.19 Sample size, n=17

Q: A national health survey weighed a sample of 260 boys aged 6-11 and found that 45 of them were…

A: Hypothesis Testing

Q: For a sample with s = 9, a score of X = 67 corresponds to z = +1.00. What is the sample mean?

A: Given that: Sample standard deviation, s=9 Score, X=67 Z-score, z=1 To find: Value of sample mean

Q: We know that teenagers (ages 12 to 17) are much more likely to use instant messaging online than…

A: Solution: Given  n1=981 Sample size of teens n2=1217 sample size of adults.x1=736 teens used instant…

Q: For the sample difference scores below, determine if the sample differs from D = 0. Use α = 0.01.…

A: To testH0:D=0H1:D≠0

Q: A law enforcement agent believes that 80% of the drivers stopped on Saturday nights for speeding are…

A: The hypothesized proportion is 0.80.

Q: Find the estimated standard error for the sample mean for n = 16 and SS = 3922. Nearest hundredths…

A: We find the standard error using the formula

Q: if the 90% Ci for the population mean is (-2. 58, 7.54) what is the sample mean О a.248 ОБ. 10.12 O…

A: Confidence interval is defined as the range that contains the value of a true population parameter.…

Q: Proctor & Gamble claims that at least half the bars of Ivory soap they produce are 99.44% pure (or…

A: Given n=sample size=112 p=sample proportion=53112=0.4732  Assume α=significance level=0.05

Q: The owners of a manufacturing company conducted a survey to determine the mean income of the…

A: We have to find correct answer.

Q: At the Fredericton High School it is estimated that at most 25% of the students ride bikes to…

A: Let, p = proportion of students who ride bikes to school

Q: The number of successes and the sample size are given for a simple random sample from a population.…

A:

Q: Suppose you take a sample of 25 Reese's pieces. The proportion of orange is 0.55. What is the…

A:

Q: Professor Zuro surveyed a random sample of 420 statistics students. One of the questions was "Will…

A: GivenTotal no. of statistics students(n)=420No.of students said yes for math class(x)=252

Q: The sample mean is a good estimate of the population mean because the lager sample compensate the…

A: It is an important part of statistics. It is widely used.

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

A:

Q: estimate the sample size

A: An estimate of sample size: The appropriate sample size for estimating the mean of a variable from…

Q: A popular charity used 36% of its donations on expenses. An organizer for a rival charity wanted to…

A: Given data : 19 25 31 20 41 32 26 21 9 24

Q: A sample of nine tourists indicated how much they spent on accommodation per night (in dollars) at a…

A: The given data is as follows:313.6, 151.6, 598.5, 222.7, 293.9, 272.6, 198.5, 382.0, 188.7

Q: For a sample of n=16 scores, how many scores are used to calculate the sample variance?

A:

Q: if the 90% Ci for the population mean is (-5.22, 7.68) what is the sample mean O a. can't be found…

A: We have given that,  90% confidence interval for the population mean is  = (-5.22, 7.68)  Then,  We…

Q: 2. A Suay vиas maae to сотраre tпе costs oj supporing a јатпу Jor a ye In aifferent foreign cities.…

A: Solution: n1=11  Sample size of Toranto n2=11  Sample size of  Mexico ∑x1= 741200x1= ∑x1n1=74120011=…

Q: A professor believes that his math students have different IQ than the average college students. He…

A: Given that, The random variable X is normally distributed. And sample size is 30=~ infinite so we…

Q: You want to compare the average working time of customer service from two companies. 9…

A: Two proportion z test used for camaring two proportion Two sample t test used to. campare the…

Q: A nationwide study indicated that 80% of college students with the cellphone send and received text…

A: Concept of sampling distribution of sample proportion: Let a particular characteristic of a…

Q: Find the estimated standard error for the sample mean for n = 27 and SS= 3505. Round to the nearest…

A: We have given that  n = 27 and SS= 3505 The formula to find estimated standard error for the sample…

Q: Prof. Jacob wants to know, with 90% confidence, the proportion of students who like to eat in the…

A: Given, Confidence interval, α = 90 Sample proportion, p^ = 0.62 Margin of error, M.E = 0.025

Q: Suppose you take a sample of 25 Reese's pieces. The proportion of orange is 0.4. What is the p-value…

A: We want to find P-value  n=25 , p=0.4 , p0=0.5

Q: n₁ = 50, x₁ =35, and n₂ = 60, x₂ = 40 OA. 0.982 OB. 0.374 OC. 2.361 OD. 1.328

A: To find: Find the standardized test  statistics.