A marketing expert for a pasta-making com- pany believes that 40% of pasta lovers prefer lasagna. If 9 out of 20 pasta lovers choose lasagna over other pas- tas, what can be concluded about the expert's claim? Use a 0.05 level of significance.

Q: A large nationwide survey showed that 65% of high school students like Coca-Cola better than Pepsi.…

A:

Q: In Cleveland, a sample of 73 mail carriers showed that 10 had been bitten by an animal during one…

A: Note: Hi there! Thank you for posting the question. To avoid the plagiarism issue we have used the…

Q: A hospital found out that there is a higher incidence of food poisoning in adults than in children.…

A: Given that, A hospital found out that there is a higher incidence of food poisoning in adults than…

Q: An online poll​ asked: "Do you believe the Loch Ness monster​ exists?" Among 20 comma 675…

A:

Q: In a rural area, only 30% of the wells that are drilled find adequate water within a depth of 100…

A: Given: x = 27 n = 80 p0 = 0.3 α = 0.10

Q: A recent survey showed that from a sample of 500 packages delivered by a Postal Service, 480 were…

A: Given: p0=0.98α=0.01n=500x=480

Q: A newsletter publisher believes that less than 50% of their readers own a laptop. For marketing…

A: Null Hypothesis: H0: p = 0.49 Alternative Hypothesis: Ha: p < 0.49 The decision is  to reject the…

Q: The sales rep of a waterbed claims that 25% of the Filipino died because of cardiovascular diseases.…

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Q: A builder claims that bidets are installed in 70% of all homes being constructed today in suburban…

A: A builder claims that bidets are installed in 70% of all homes being constructed today in suburban…

Q: In a recent poll, 1095 randomly selected adults were asked whether they approve of labor unions; 65%…

A: The null and alternate hypothesis are H0 : p=0.69Ha : p<0.69 The test statistics is…

Q: Use a 0.05 level of significance to determine whether there is a significant difference between the…

A: Null and alternative hypothesis: Given data represents the number of daily crime reports for a…

Q: Are blonde female college students more likely to have boyfriends than brunette female college…

A: The null hypothesis is a simple statement about the value of the population parameter which is…

Q: A travel agent claims that overseas Filipinos comprise less than  one out of ten tourists in the…

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Q: Many financial institutions are unwittingly training their online customers to take risks with their…

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Q: • In a 2019 survey of 560 college students, 171 said they used illegal drugs during the previous…

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Q: 3. A marketing expert for a pasta-making company believes that 40% of pasta lovers prefer lasagna.…

A:

Q: A newsletter publisher believes that 38% of their readers own a Rolls Royce. A testing firm believes…

A: Given that, a newsletter publisher believes that 38% of their readers own a Rolls Royce. A testing…

Q: The accompanying table shows results of challenged referee calls in a major tennis tournament. Use a…

A:

Q: 62% replied in the affirmative. At the 1% significance level, do the data provide sufficient…

A: Given : n=1125 , p-hat=0.62 , p0=2/3 , α=0.01 Our aim is to test weather the less than 2/3 of all…

Q: A significance test with a one-sided alternative hypothesis yields a pp-value of 0.100.10. If the…

A: For the one sided alternative hypothesis test, the p value is given as 0.10

Q: A telecommunications company provided its cable TV subscribers with free access to a new channel for…

A: We have to perform Z test for single proportion.

Q: In a random sample of Toyota car owners, 83 out of 112 said they were satisfied with the Toyota…

A: Given that,sample one, x1 =83, n1 =112, p1= x1/n1=0.7411sample two, x2 =76, n2 =120, p2=…

Q: In a survey of 100 college students at Chabot College, 67 said that they commuted by cars. In…

A: a) The test hypotheses are: Null hypothesis: H0: p1 = p2 Alternative hypothesis: Ha: p1 ≠ p2 Test…

Q: The table below summarizes data from a survey of a sample of women. Using a 0.05 significance level,…

A: Null and Alternative Hypotheses:   Null hypothesis:   H0: The response of the subject and gender of…

Q: Are Republicans more likely than Democrats to display the American flag in front of their residence…

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Q: A USU Today survey found that of the gun owners surveyed 275 favor stricter gun laws.  The survey…

A: The hypotheses are given below: Null hypothesis: H0:p=0.50 Alternative hypothesis: H1:p>0.50. It…

Q: 2. Of 150 adults who tried a new peach-flavored peppermint patty, 87 rated it excellent. Of 200…

A: Given data of 150 adults who tried a new peach flavored peppermint patty 87 rated it excellent of…

Q: In a survey, 716 out of 1132 randomly selected adults in the United States said that they use cell…

A:

Q: A Gallup poll conducted April 1-21, 2021, found that 548 out of 961 American adults approve of the…

A: Given: Number of success (x) = 548 Number of trials (n) = 961

Q: An online poll​ asked: "Do you believe the Loch Ness monster​ exists?" Among 20 comma 47820,478…

A: From the given information, the claim of the problem is “most of the people believe that the Loch…

Q: A music expert from a CD player company believes that 40% of music lovers prefer romantic music.…

A:

Q: In a random sample of soldiers who fought in the battle of Preston 774 soldiers were from the new…

A: Solution: It is required to test the claim that fewer than one quarter of the soldiers were…

Q: A soda company distributes diet cola in bottles label 32 oz. The Department of Trade and Industry…

A: Hello! As you have posted 2 different questions, we are answering the first question. In case you…

Q: used their cell phone and 72 of 120 males did so. At the 0.01 level of significance, is there enough…

A: It has been found that many first-time interviewees commit errors that could very well affect the…

Q: Do you believe that more than 92% of google play apps are free? to answer the question above, a…

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Q: An online poll​ asked: "Do you believe the Loch Ness monster​ exists?" Among 22,038 ​responses,63 ​%…

A: Solution: From the given information, p-hat = 0.63 and n = 22,038.

Q: Only about 10% of all people can wiggle their ears. Is this percent different for millionaires? Of…

A: Here use single proportion z test Only about 10% of all people can wiggle their ears. Is this…

Q: The City of South Lake Tahoe, CA, has an Asian population of 1,419 people, out of a total population…

A: The null and alternative hypothesis for testing is defined as, H0 = The sub-groups of Asians in the…

Q: According to the National Highway and Traffic  Safety Administration,  the proportion of fatal…

A: D) The conditions for hypothesis testing of proportion are: np≥10n(1-p)≥10, here, n represents…

Q: A newsletter publisher believes that less than 68% of their readers own a Rolls Royce. For marketing…

A: The advertiser is decided to reject the null hypothesis that means accept the alternative…

Q: A study was designed to compare the smoking habits of married men with those  married women. A…

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Q: Consumer Reports did a survey of 1100 adults and found that 565 were unhappy that their food did not…

A: Claim: The majority of adults are annoyed by food that does not look like the picture in the menu.…

Q: e the flu. She researched some past studies, and found that about 25% of people who get the flu and…

A: The sample proportion is, The following null and alternative hypotheses need to be tested: Ho: p =…

Q: A doctor is concerned that nausea may be a side effect of Tamiflu, but is not certain because nausea…

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Q: A concerned group of citizens wanted to know if the proportion of forcible rapes in Indonesia was…

A: Solution: Note: Hello! As you have posted more than 3 sub parts, we are answering the first 3…

Q: Stem Cell Survey Newsweek conducted a poll in which respondents were asked if they “favor or oppose…

A: The claim is that there is no difference between the proportions of those opposed and those in favor…

Q: A newsletter publisher believes that less than 68 % of their readers own a Rolls Royce. For…

A: Hypothesis test means, decision-making about the population parameter. In the null hypothesis and…

Q: A company claims that less than 30% of people who both work and live in Newcastle. A study revealed…

A: p̂=x/n,  X=62, n=200, p=0.30 we want to test the hypothesis

Q: 4. In a poll of 1018 adults, it was found that 22% smoked cigarettes in the past week. Use a 0.05…

A: