According to a recent​ report, 46​% of college student internships are unpaid. A recent survey of 80 college interns at a local university found that 51 had unpaid internships.   b. Assume that the study found that 42 of the 80 college interns had unpaid internships and repeat​ (a). What is the test​ statistic?   ZSTAT= ​(Round to two decimal places as​ needed.) What is the​ p-value?   The​ p-value is   ​(Round to three decimal places as​ needed.)   What is the final​ conclusion

Q: In 1980 and again in 2010, a Gallup poll asked a random sample of 1000 US citizens "Are you in favor…

A:

Q: Is the average time to complete an obstacle course different when a patch is placed over the right…

A: There are two independent samples which are right and left. We have to test whether the average time…

Q: A publisher reports that 65% of their readers own a laptop. A marketing executive wants to test the…

A: Here the given information is A publisher reports that 65% of their readers own a laptop. A…

Q: Claim: Most adults would erase all of their personal information online if they could. A software…

A:

Q: A sample has SS= 20 and s? = 4. How many scores are in the sample?

A: Six scores are in the sample.

Q: Many athletes (and their parents) worry about the risk of concussions when playing sports. A…

A: First let us sort the head circumferences (in inches) for the players on the team; No. Head…

Q: Calculate the following. (Round your answer to two decimal places.) sample mean = x

A:

Q: A sample consists of the following n = 6 scores: -2, 3, -3, 1, -3, 4 What is the Z-score for the raw…

A: Given data set is -2,3,-3,1,-3,4sample size(n)=6

Q: Compute the test statistic. Round to two decimal places.

A: Sample size, n=2027 No. of adults who drank diet soda, x=485

Q: What is the p-value only?

A: It is given that  In the original solution  The value of the test statistic is z = 3.92. The given…

Q: The table below summarizes the  results of a survey in which randomly selected people were asked how…

A: It is needed to test, whether the feelings on medical marijuana and gender are independent or not.

Q: The time it takes for an airline to get the luggage to the airport baggage carousel after a flight…

A: Let X: The time takes for the luggage to reach the airport baggage carousel.X has a uniform…

Q: According to College Board the scores on the AP History exam are normally distributed with N(72,…

A: It is given that the scores on the AP History exam are normally distributed with N(72, 7.5).

Q: A sample of 8 movie tickets had the following prices: 1 ticket at $7.50, 3 tickets at $8.50, and 4…

A: The price of 1 ticket is $7.50 The price of 3 tickets is $8.50  The price of 4 tickets is $9.40…

Q: #1 = $48,877 a2 = $55,157 81 = $16,000 82 = $12,000 a. Formulate hypotheses so that, if the null…

A: Given Data : For Finance majors x̄1 = 48877.0 s1 = 16000.0 n1 = 130…

Q: sample proportion is p= und to three decimal places as needed.)

A: Given Number of sample of teenagers between 13 to 17 year of ages(n)=280

Q: evelop a point estimate of the proportion of teens aged 13 to 17 who say social media makes them…

A: Sample size n=743

Q: SAT coaching: A sample of 10 students took a class designed to improve their SAT math scores.…

A: The random variable SAT math score follows normal distribution. There are two dependent samples…

Q: Claim: Fewer than 91% of adults have a cell phone. In a reputable poll of 1085 ​adults, 83​% said…

A:

Q: n below: Data for Gender vs. Orientation Attendance Women Men 371 419 be concluded at the a = 0.05…

A: There are two independent samples which are women and men.We have to test whether women are more…

Q: Suppose that 18% of a random sample of 2307 Miami residents said that they will donate blood in…

A: p =0.18 n = 2307

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: Calculate the test statistic. t0 =  (Round to two decimal places as​ needed.) Calculate the…

A:

Q: Assume a Normal distribution. What can be concluded at the the αα = 0.01 level of significance…

A:

Q: What is p value ?

A: The​ P-value is the probability of observing difference in the sample statistic this high or higher…

Q: A recent study indicated that 43% of the 100 women over age 55 in the study were widows. Round up…

A:

Q: Use the expression in the accompanying discussion of sample size to find the size of each sample if…

A:

Q: A fitness trainer is interested in investigating whether ethnicity and the first exercise activity…

A:

Q: Which chi-square test should be used on the following study? A psychotherapist wanted to see what…

A: The chi-square test of independence is known as the method that is used to define whether there is a…

Q: Given n = 15 Test scores in Emglish. 60,62,68, 70, 72, 74, 78,79, 82, 84,86 ৭০, १2, १५, १5. Find the…

A: A percentile  is a score below which a given percentage of scores in its frequency distribution or a…

Q: It was hypothesized that there will be a difference in the average test score in Chemistry class…

A: Denote μ1, μ2 as the true average test scores in Chemistry class between high schoolers who watched…

Q: In the past, 70% of the tourists who visited Dubai went to see Burj Khalifa. The management of Burj…

A: From the provided information, In past, 70% of the tourists who visited Dubai went to see Burj…

Q: It was hypothesized that there will be a difference in the average test score in Chemistry class…

A: Denote μ1, μ2 as the population average test scores in Chemistry class of high schoolers who watched…

Q: A sample of 276 people was surveyed. People are classified according to their political ideology…

A: Given Data : Number of right wing people = 47 + 25 + 19 = 91 Number of people who are indifferent…

Q: For a histogram with a long right tail, more than half of the area is to the left of the mean. O…

A: Graph of long right tail

Q: he scores on a test for a sample of 38 statistics students are summarized in the following table.…

A: students score(x) no. of students(f) fx 90 9 810 80 16 1280 70 13 910   n = 38 ∑fx = 3000…

Q: What’s the formula to turn a Z score to a T score?

A: The  score is the standardized score obtained by using population data or large samples .The  score…

Q: Checkout times. The checkout times (in minutes) for 12 randomly selected customers at a large…

A: Solution-: We find, (a) The mean of the checkout times ...min (b) The standard deviation of the…

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.