In a recent study, 25 males used a new weight-loss supplement, and all but 6 of them experienced weight loss after two weeks. In the same study, 50 females used the same supplement, and all but 7 of them experienced weight loss after two weeks. Fill in the blanks of the statement below to make the statement the most reasonable possible. The new weight-loss supplement was less effective on ? only % of the ? v in the study because % of them failed to lose weight after two weeks, whereas failed to lose weight after two weeks.

Q: A child gets a half dollar from the Tooth Fairy for losing a tooth, and the child excitedly begins…

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Q: Q7:-During the 10 weeks of a session, the marks scored by two candidates, A and B. Taking the…

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Q: skateboard 2. A study on crime suggested that at least 40% of all arsonists were less than 21 years…

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Q: the claim of health officer true

A: Given; n=100, x=70 , P0=60% and α=0.01 To test: H0: The researcher concludes completed polio vaccine…

Q: A CBS News poll asked a random sample of 1025 Americans how they identified themselve politically…

A: Given: α=0.05

Q: the conclusion is either reject the null, or fail to reject the null . the p-value is .0228, .9974,…

A: How to find P value from z test : a] If z statistic is positive : 1] If your test statistic z is…

Q: Twenty five percent of the customers of a grocery store use an express checkout. Consider five…

A: Twenty five percent of the customers of a grocery store use an express checkout.  Probability = 25%…

Q: The manager of the dairy section of a Superstore in Regina feels that at least 10% of the egg…

A: Given claim: At least 10% of the egg cartons have at least one broken egg. Null Hypothesis:…

Q: The instructor of a discrete mathematics class gave two tests. Forty percent of the students…

A: It is known that x is xy×100% of y and y is yx×100% of x.

Q: Q3/ In a cement store there are (750) bags, (400) of which are salt- resistant, (200) of them are…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: It is believed that an ice cream making machine at Mulungushi University tuck shop makes corn ice…

A: Given: μ = 5   Explanation: i). Since, the claim that the machine no longer makes 5g corn ice cream…

Q: The National Safety Board predicts that 500 people will be killed and another 25,000 will be injured…

A: Assume that p as the true proportion of all accidents.

Q: \fter the premiere of the new comedy Bumblebee, moviegoers were asked in a quick poll whether they…

A: Given Information: Out of 100 adults, all but 21 said they liked the movie. Out of 25 teenagers, all…

Q: Checking Job Applicants In a study conducted by the Society for Human Resource Management, 347 human…

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Q: A professional marketing survey involves product recognition in New York and California. Of 558 New…

A: We have to test claimm..

Q: In a recent study, 25 males used a new weight-loss supplement, and  19 of them experienced weight…

A: Given information No of males uses a new weight-loss supplement = 25 No of them who experienced…

Q: The police department wanted to know if 911 calls came in more often on some days of the weekend.…

A: Chi square goodness of fit is applicable

Q: Regarding the context regarding the coronavirus pandemic, see the table below, which refers to 5…

A: Statement by tiagro: "With certainty, 7 deaths occurred in a group with a number of infected greater…

Q: Given Ho: p2 80% and H p<80%, determine whether the hypothesis test is left- tailed, right-tailed,…

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Q: The academic planner of a university thinks that less than 35% of the entire student body attends…

A: From the provided information, The claim is that less than 35% of the entire student body attends…

Q: Recently, a health organization estimated that the flu vaccine was 68% effective against the…

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Q: tatewide, the police clear by arrest 35% of the robberies and 42% of the aggravated assaults…

A: From provided information it is claimed that, there is significant difference in the local arrest…

Q: second-stage smog alert has been called in a certain area of Los Angeles County in which there are…

A: a) It is given that N=70, M=28 and n=10.

Q: A statistics instructor believes that fewer than 20% of Evergreen Valley College (EVC) students…

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Q: (b) Would you recommend a test procedure that uses a = 0.10 or one that uses a = 0.01? Explain. Use…

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Q: Only 42% of registered voters voted in the last election. Will voter participation be even lower for…

A: Given, p=42% = 0.42 This is the left tailed test .

Q: In a two tailed test, σ=.05 and N is 35. (a) is tobt = +2.019 significant ? (b) is tobt = -2.47…

A: The following is the Decision rule to conclude that whether the result is significant or not.…

Q: There are two main fishing spots in a certain video game, a river and a lake. In the river, out of…

A: a) Given claim: The proportion of trout in the river is greater than the proportion of trout in the…

Q: In a survey of 399 randomly selected households conducted in the U.S., it was found that 158 of the…

A: Given Information: Population proportion (po) =0.5 Sample size (n) = 399 Sample proportion (p) =…

Q: In a state election, 685 out of 1230 voters surveyed said that they voted for the candidate who won.…

A: The random variable X follows binomial distribution. We have to use normal approximation to binomial…

Q: College Degree Recipients A survey of 800 recent degree recipients found that 158 received associate…

A: We have to perform Chi-square goodness of fit test.  Hypothesis : H1 : At least one of the…

Q: Which activity(ies) encouraged you to use rationalism to answer the question of which toss of the 3…

A: Rationalism is the practice of only believing what is based on reason. An example of rationalism is…

Q: accroding to a study , a man seated in the front seat who was not earing a seat belt  was 81% more…

A: Let us assume:  A=air bag A'=no airbag K=killed Given that P(K|A)=1.81P(K|A') P(A)=20%=0.20 We have…

Q: A social worker reports that 30% of the recipients of the emergency subsidy already received the…

A: Given  X=38, n=120 pcap=X/n  p=0.30 We want to test the hypothesis

Q: According to a report, 71.9% of murders are committed with a firearm. (a) If 400 murders are…

A: Given, Probability of murders by a firearm = 71.9% = 0.719

Q: A special-interest group has conducted a survey concerning a ban on hand guns. Note: A rifle is a…

A: Venn diagram of the above is shown below

Q: Use the information to answer the following question. Jimmy purchased a package of jelly beans that…

A: A bag contains 75 jelly beans. It has jelly beans of different colors. Given that the bag has a hole…

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Q: na has conducted a hypothesis test for H0:μ=72 vs. Ha:μ≠72, found a p-value of 0.07, and decided not…

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Q: A coach of a cross country team asked all 200 of the runners who ran at a meet two questions: Did…

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Q: Illustrate the problem with doing t tests among all pairs of means?

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Q: What is the probablity that a customer will pay with a credit card?    B) A customer did not pay…

A: Let us define some events A : the purchase is more than $5 B : the purchase is $5 or less. E : the…

Q: In the past, 74% of the tourists who visited Chattanooga went to see Rock City. The management of…

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Q: According to a report, 62.8% of murders are committed with a firearm. (a) If 100 murders are…

A: From the provided information, 62.8% of murders are committed with a firearm that is p = 0.628

Q: Many drivers of cars that can run on regular gas buy premium in the belief that they will get better…

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Q: Q3/ In a cement store there are (1000 ) bags, (700) of which are salt- resistant , (200) of them are…

A: Given that, in a cement store there are (1000) bags, (700) of which are salt- resistant, (200) of…

Q: After the premiere of the new comedy Bumblebee, moviegoers were asked in a quick poll whether they…

A: From the provided information, For adults, the proportion who liked the movie = 6/20 = 0.3 = 30%.…

Q: there are 65 successes of 150 trials in the one group, and 115 successes of 200 in another, test if…

A:

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.