149. ASsume that half the population is vegetarian so that the chance of an individual being reetarian is Assuming that 100 investigators each take sample of 10 individuals to see whether they vegetarians, how many investigators would you expect to report that three people or less were egetarian?

Q: 4. Based on the survey conducted to 1200 respondents, I out of 3 Filipinos can't live without cell…

A:

Q: A hot topic of debate is whether the legal driving age should be raised to eighteen. From a random…

A: It is tested whether majority of the Americans believe the legal driving age should be raised to 18.…

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A: There are 5 kinds of beef and 4 types of cheese. If roast beef or salami is selected then there are…

Q: Assume that there are only two age groups ("young" and "old"). Among Argentine immigrants in the US,…

A:

Q: Netflix is interested in determining if there is a difference in the proportion younger adults (ages…

A: Let n1 and n2 be the sample size of young and old people respectively. n1=120 n2=100 Let x1 and x2…

Q: A researcher wishes to estimate the number of households with two cars. How large a sample is needed…

A:

Q: About 47% of people who go to the bars typically drink tequila once they arrive. a) Can we use the…

A: What is CLT When sample size is large enough then the distribution approach to normal regardless of…

Q: What proportion of 20% defective shipments will be accepted?

A: Given : N=50 , n=5 , p=0.20 , M=N*p=50*0.2=10 Here , X​​​​​​​Hypergeometric (n=5,N=50,M=10) The…

Q: 4) 57% of kids can't wait for spring break. How many kids on average would we need to survey to find…

A: Geometric Distribution: Let us assume there is a sequence of trials, each having two outcomes, say…

Q: Suppose that a poll of 326 voters finds that 34% of those surveyed support Measure A. What is q'?…

A: The given values are, The formula for calculating the value of q'is

Q: A researcher wishes to estimate the number of households with two computers. How large a sample is…

A: given data   CI = 0.90, P ( - Z< P < Z ) = 0.90 therefore z = 1.645 ( =z table ) E = 6% =…

Q: Suppose the U.S. president wants to estimate the proportion of the population that supports his…

A: Critical value: The value of α is 0.05 for 95% confidence level. Using excel formula…

Q: 10. Data from the FBI revealed that of all the people arrested in the U.S. in 2020, 73% of them were…

A: To find: a) The probability that someone who was arrested is not a juvenile b) The probability that…

Q: :5. If in a village actually involved by anthrax, 70 per cent of the goats are attacked and 85 pet…

A:

Q: SRS of 25 commuters to the Washington DC re selected, and each is asked how far they ommute to work…

A: Given data,n=25The sample mean x=39Sample sd     s=6Construct 90% CI?

Q: 5. A clinical researcher is conducting a study using an FDA approved medication that helps patients…

A: Given that  The researcher obtain a sample size (n)= 350 Believe that medication works on 75% of the…

Q: Last year, 41% of business owners gave a holiday gift to their employees. A survey of business…

A: Given Information : Population proportion , p = 0.41. Sample proportion , p⏞ = 0.32. Number of…

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A: As per the guidelines we are allowed to solve maximum of 1 question If you need help with another…

Q: Please answer number 13.

A: It is given that 43% had no children, 18% are had one child, 18% are have two children, 21% have…

Q: 4. A private opinion poll is conducted for a politician to determine what proportion of the…

A:

Q: Suppose you toss a fair coin 10,000 times. Should you expect to get 5000 heads?

A: As we know every time a fair coin is tossed the chance of getting head or tail is equal that is 50…

Q: 3. A light bulb manufacturer finds that 4% of the bulbs it makes are defective. The quality control…

A: We will calculate percentage of 700 out of 15500 if it becomes 4% then we can agree.

Q: 3. Write the appropriate null and alternative hypothesis in symbols to determine if the proportion…

A: The null and alternative hypotheses of first example Ho:p=0.20H1:p≠0.20  Null hypothesis: THe…

Q: Suppose that 19% of all athletes in a sport use a banned drug. A test is available that detects 88%…

A:

Q: Suppose you wish to estimate a population mean based on a random sample of n observations, and prior…

A: The population standard deviation is 12.7, the margin of error is 1.6 and probability(or confidence…

Q: 8. Rachel Ray has a popular FoodNetwork show, 30 Minutes Meals. However, in a study conducted by USA…

A: given that

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A: Introduction:The full-time female undergraduate students are of two types- those who study abroad,…

Q: How many of the 3088 subjects used at least one prescription​ medication?

A: Number of adults aged 57 through 85 years in a survey, n = 3088 p be the probability that an adult…

Q: A senator wishes to estimate the proportion of United States voters who favor abolishing the…

A:

Q: 1. How many in the sample would have IQ scores not higher than 130? 1. 2. How many in the sample…

A: NOTE-AS PER POLICY I HAVE CALCULATED FIRST 3 SUBPARTS   hERE given the summary table for IQ Score…

Q: From the U.S. Census Bureau's American Community Survey in 2019 it was found that 33.13% of United…

A: Note: Hi there! Thank you for posting the question. As you have posted multiple questions, as per…

Q: 5. A pharmaceutical researcher needs 7 people to test the effectiveness of an experimental drug. If…

A: we have to select people therefore we will use combination nCr=n!/r!(n-r)!

Q: How many scores 2. between 96 and 106?

A: HERE GIVEN , mean µ = 86 and σ= 10. HERE USE NORMAL DISTRIBUTION BECAUSE POPULATION IS LARGE ENOUGH…

Q: In a study of children, a total of 1,548 children were examined. Of these, 1,017 had rickets. Of the…

A:

Q: 5. Assuming that half the population are consumers of wheat in Northern India, so that the chance of…

A: Here Given  Total Number of Investigators=100=N No of Individuals were asked by single…

Q: 4. A survey shows 47% of movie goers are males. A test is conducted to see if the proportion is…

A: Solution : Null Hypothesis : The hypothesis to be tested is is called as null hypothesis. Generally…

Q: A state highway patrol official wishes to estimate the number of  legally intoxicated    drivers on…

A: It is given that margin of error (E) is 0.05 and the confidence level is 0.99.

Q: 5.)  A survey found that 86% of Americans have never been a victim of crime.  If a sample of 12…

A: Let X denote the no.of Americans have never been a victim of crime and it follows binomial…

Q: 8. Use the figure to the right, which shows the percentages of adults from several countries who…

A: Given Information: Country A: Sample size (n1) = 1003 Sample proportion (p^1) = 49% = 0.49 Country…

Q: A poll is conducted and shows that 46% of homes have a landline, with a margin of error of 3%. a.…

A: Given that a poll is conducted and shows that 46% of homes have a landline with a margin of error of…

Q: rom the U.S. Census Bureau’s American Community Survey in 2019 it was found that 33.13% of United…

A: since there are multiple parts, first three subparts are answered. kindly repost for more help .

Q: General Motors wants to know if a newly designed car has a different appeal to people under 30…

A: Given data  General motors wants to know if a newly designed car has a different appeal to people…

Q: In a Gallup poll of 1236 adult respondents, 6% said that bad luck follows breaking a mirror. That…

A: The margin of error expresses the amount of the random variation underlying a survey's results

Q: 4. The mean weight of five complete computer stations is 167.2 pounds. The weights of four of the…

A: Formula : x̄=Σx/n

Q: In a survey of 3367 adults aged 57 through 85​ years, it was found that 84.2​% of them used at least…

A: A survey of 3,367 adults aged 57 through 85​ years. There is 84.2​% of them used at least one…

Q: A pollster wishes to estimate the proportion of United States voters who favor capital punishment.…

A: Given that, Critical value: Using the z-table, the critical value at 90% confidence level is

Q: time a 10-year-old American child spends playing outdoors per day is between 19.28 and 24.08…

A: Given Data Lower limit = 19.28 upper limit = 24.08

Q: 4. In a study to estimate the proportion of residents in a certain city and its suburbs who favor…

A: