A hospital director is told that 79%79% of the emergency room visitors are insured.  The director wants to test the claim that the percentage of insured patients is under the expected percentage.  A sample of 440440 patients found that 330330 were insured.  State the null and alternative hypotheses.

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

A: We heed to find null and alternative hypothesis.

Q: A federal report indicated that 22% of children ages 2 to 5 years had a good diet, an increase over…

A:

Q: A reader wrote in to the “Ask Marilyn” column in Parade magazine to say that his grandfather told…

A: As per guidelines we will only answer first three subparts, please repost other subparts for more…

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

A: Introduction - z-score  z=x-μσwhere ,x=score σ=standard deviation μ=mean

Q: In a fishing lodge brochure, the lodge advertises that 75% of its guests catch northern pike over 20…

A:

Q: A dietician read in a survey that 76.4% of adults in the U.S. do not eat breakfast at least 2 days a…

A: 26 The claim of the test is that smaller proportion than 0.764 of skip breakfast 2 days a week. Let…

Q: . Restate the grandfather’s assertion as the null hypothesis, in symbols and in words. 2. Given…

A: Given, n=95 X=47

Q: Suppose a recent survey found that 74% of dog owners say their pet appears cheerful, while only 59%…

A: Given, p^1=0.74p^2=0.59

Q: In a sample of 49 men, 38 said that they had less leisure time today than they had 10 years ago. In…

A: The claim is that there is a difference in the proportions.

Q: A decade-old study found that the proportion, p, of high school seniors who believed that "getting…

A:

Q: The mayor of a town believes that less than 53 % of the residents favor annexation of a new…

A: Here we need to state the null and alternative hypothesis for the given situation.

Q: respond favorably to a new advertisement than the people in the western part of her country. She…

A:

Q: A hospital director is told that 32%of the emergency room visitors are uninsured. The director wants…

A:

Q: To determine if people prefer this year's school start time over last year's school start time, WCS…

A: From the above data

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

A: Given information: An organization previously reported that average number of hours per week that…

Q: In a fishing lodge brochure, the lodge advertises that 75% of its guests catch northern pike over 20…

A: Single proportion test

Q: A newsletter publisher believes that over 68% of their readers own a personal computer. Is there…

A: According to the provided information, a newsletter publisher believes that over 68% of their…

Q: In a recent survey, it was stated that Americans watch television on average four hours per day.…

A: It is provided that the sample mean is 40. As the average time of watching television can never be…

Q: The U.S. Department of Transportation, National Highway Traffic Safety Administration, reported that…

A:

Q: A well-known brokerage firm executive claimed that at least 84 % of investors are currently…

A: The provided information are:

Q: Recently, a large academic medical center determined that 8 of 15 employees in a particular position…

A:

Q: A coin-operated drink machine was designed to discharge a mean of 8 ounces of coffee per cup.…

A: GIVEN: μ=8 Hypothesis: The null hypothesis is given below: H0: μ=8 The alternative hypothesis is…

Q: You created a 95% confidence interval for µ with the result 95 ≤ µ ≤ 115.             What decision…

A: Here  Null hypothesis µ = 98 value is between the given confidence interval.

Q: A newsletter publisher believes that 67 % of their readers own a personal computer. Is there…

A: Here we need to state the null and alternative hypothesis for the given situation.

Q: In 1948, an organization surveyed 1100 adults and​ asked, "Are you a total abstainer​ from, or do…

A: State the hypotheses.   Obtain the value of the test statistic. The value of test statistic is…

Q: A local police chief claims that about 57% of all drug related arrests are ever prosecuted. A sample…

A: Solution: From the given information, the claim is that about 57% of all drug related arrests are…

Q: The Associated Press found that 730 of 1000 randomly selected adults preferred to watch movies at…

A: Null and alternative hypotheses: The hypothesis, which is pre assumed as true, tentatively settled…

Q: Members of the city council want to know if a majority of city residents supports a 1% increase in…

A: Since the value p-value is significantly large P-value=0.18 hence we will not be able reject the…

Q: of men who own cats is smaller than the proportion on nce level. The null and alternative hypothesis…

A: Given: Level of significance, α=0.005 Set the hypothesis: H0 : pM=pFHa : pM<pF The test is: right…

Q: In a​ poll, 51​% of the people polled answered yes to the question​ "Are you in favor of the death…

A: Let p denote the proportion of people answered yes to the question. Let E denote the margin of…

Q: A pollster wants to conduct a pre-election poll with a margin of error of 2.5% and a 95% confidence…

A: We have given that,  Margin of error (E) = 2.5% = 0.025 and confidence level = 95%  Then, We will…

Q: According to a University Center for Logistics Management, 10% of all merchandise sold in the United…

A: From the provided information, Sample size (n) = 89 Out of which 8 of the items were returned. The…

Q: In a fishing lodge brochure, the lodge advertises that 75% of its guests catch northern plke over 20…

A: a) Denote p as the true proportion of guests who catch pike over 20 pounds.

Q: A business journal investigation of the performance and timing of corporate acquisitions discovered…

A: Solution: Let X be number of firms announced one or more acquisitions during the year 2000 and n be…

Q: A publisher reports that 44% of their readers own a particular make of car. A marketing executive…

A: From the provided information, A publisher reports that 44% of their readers own a particular make…

Q: A publisher reports that 52 % of their readers own a laptop. A marketing executive wants to test the…

A: Solution : Given that, Population Proportion p0 = 0.52 Sample Size n = 350 Sample Proportion p^=0.46…

Q: A local police chief claims that about 22% of all drug related arrests are ever prosecuted. A sample…

A: The known values are, The null and alternative hypothesis is, Level of significance, The value of…

Q: A business journal investigation of the performance and timing of corporate acquisitions discovered…

A:

Q: Country Magazine reports that celebrity MySpace accounts have an average of 4 million friends.…

A: We have given that, Mu = 4 , Xbar = 3 , n =43 . We have to find , Which is the best set of…

Q: USA Today reported that about 47% of the general consumer population in the United States is loyal…

A: a) The level of significance is 0.01.

Q: , what is the test statistic and p-value?

A:

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

A: The sample proportion confidence interval is, p^±Zp^(1-p^)nwhere, p^ = the sample proportion…

Q: A publisher reports that 40%40% of their readers own a particular make of car. A marketing executive…

A:

Q: USA Today reported that about 47% of the general consumer population in the United States is loyal…

A: "Hi! Thank you for the question! Since the question contains four subparts and we are allowed to…

Q: A brokerage firm is curious about the proportion of clients who have high-risk stocks in their stock…

A:

Q: A decade-old study found that the proportion of high school seniors who felt that "getting rich" was…

A: In this context, it is given that the proportion of high school seniors who felt that “getting rich”…

Q: The Adecco Workplace Insights Survey sampled men and women workers and asked if they expected to get…

A: A hypothesis test can be conducted to compare the population proportion of two independent…

Q: Set up the null and alternate hypotheses to test whether the population mean is equal to 10 when you…

A: The Null hypothesis is  Ho: μ=10

Q: In a​ poll, 69​% of the people polled answered yes to the question​ "Are you in favor of the death…

A: Given: Margin of errorE=0.02 Proportion of people who polled yes p^=0.69 The z value corresponding…

Q: A business journal investigation of the performance and timing of corporate acquisitions discovered…

A: Solution: Let X be number of firms announced one or more acquisitions during the year 2000 and n be…

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.