Of the 1,000 people, 550 people used company s's smartphone and 460 people used company a's smartphone. Find a 95% confidence interval for the percentage of people using S company smartphones.

Q: In a survey of 2279 ​adults, 729 say they believe in UFOs. Construct a 90% confidence…

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Q: Of 125 adults selected randomly from one town, 28 of them smoke. Construct a 99% confidence interval…

A: It is given that out of 125 adults in one town, 28 of them smoke. That is the value of n is 125 and…

Q: A survey of 200,000 boat owners found that 12% of the pleasure boats were named Serenity.Find the…

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Q: In a survey of 1250 U.S. adults, 363 said that their favorite sport to watch is football. The 95%…

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Q: The newspaper conducted a survey and asked some of the city's voters which candidate they preferred…

A: For the given confidence interval, the margin of error, E is:

Q: In a survey of 2344 ​adults, 715 say they believe in

A: Given that there are 2344 adults and 715 say they believe in UFOs. Consider the sample proportion,…

Q: In a survey of 1,200 social media users, 56% said it is not okay to be friends with your boss.…

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Q: When Mendel conducted his famous genetics experiments with peas, one sample of offspring consisted…

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Q: Find a 95% confidence interval

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Q: . How many of the 3335 subjects used at least one prescription​ medication? b. Construct a​ 90%…

A: n = 3335 p = 0.804

Q: In a survey of 3234 adults aged 57 through 85​ years, it was found that 88.9% of them used at least…

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Q: In a survey of 300 T.V. viewers, 120 said they watch network nightly news programs. Construct a 95%…

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Q: Of 380 randomly selected medical students, 21 said that they planned to work in a rural community.…

A: Sample proportion=p^=21380z=critical value for 95% confidence interval=1.96n=sample size=380

Q: Out of a sample of 150 people who walked into a fast food restaurant, 135 said they prefer ketchup…

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Q: In a survey of 1037 US adults ages 65 and over, 643 were concerned about getting the flu. A 99%…

A: Given,n=1037x=643p^=xnp^=6431037=0.6201-p^=1-0.620=0.380α=1-0.99=0.01α2=0.005Z0.005=2.58    (from…

Q: When Mendel conducted his famous genetics experiments with peas, one sample of offspring consisted…

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Q: In one city, 59.6% of the 1500 students surveyed said they eat at the school cafeteria. Find the 95%…

A: Given, Sample size=n=1500 p^=0.596 α=0.05

Q: If 73.3% of the 45 students in our class are under the age of 20, find the 95% confidence interval…

A: Given, p = 0.733 n = 45 1 - α = 0.95α = 0.05α2 = 0.025     To find, 95% confidence interval for the…

Q: Of 380 randomly selected medical students, 21 said that they planned to work in a rural community…

A: Given that, Out Of 380 randomly selected medical students, 21 said that they planned to work in a…

Q: Of 380 randomly selected medical​ students, 21 said that they planned to work in a rural community.…

A: Given that 380 randomly selected medical​ students, 21 said that they planned to work in a rural…

Q: The confidence interval was (22, 26) What was the point estimate? What was the margin of error?

A: Given confidence interval was (22, 26)

Q: In a survey of 3473 adults aged 57 through 85​ years, it was found that 84.6% of them used at least…

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Q: Of 91 adults selected randomly from one town, 60 have health insurance. Find a 90% confidence…

A: From the provided information, Sample size (n) = 91 Out of which 60 have health insurance. Sample…

Q: 95% confidence interval for the proportion of adults in the United States who say that their…

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Q: A local health centre noted that in a sample of 400 patients, 80 were referred to them by the local…

A: Introduction: The 100 (1 – α) % confidence interval for the population proportion, p is: Here, n is…

Q: A recent survey found that 35 people out of a sample of 410 South Africans suffer from diabetes.…

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Q: In a survey of 1,626,773 U.S. adults, 49,311 personally identified as lesbian, gay, bisexual, or…

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Q: in a sample of 855 bartenders, 48.0% report hearing complaints from patrons about their jobs. If the…

A: From the given information, the sample size (n) is 855. The sample proportion (p) is 48% that is p =…

Q: In one city, 32.4% of the 5000 students surveyed said they eat at the school cafeteria. Find the 95%…

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Q: A marketing study by Ford Motor Company finds that 320 of the 650 buyers of compact cars were women.…

A: Let the population proportion of women who bought compact cars be P Given:         Sample size n =…

Q: What would answer be at 99% confidence interval?

A: We have given that,  Sample proportion (p̂) = 64% = 0.64 and sample size (n) = 550 Then,  We will…

Q: If n=550 and X = 440, construct a 90% confidence interval. Give your answers to three decimals <p<

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Q: In a survey of 3116 adults aged 57 through 85​ years, it was found that 86.2​% of them used at least…

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Q: The pizza Shop wanted to determine what proportion of its customers ordered an only cheese pizza.…

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Q: Michelle, a student studying music, randomly sampled fellow music majors and asked whether they…

A: Given information- Confidence interval = (0.09, 0.26) We have to find margin of error. We know that-…

Q: Of 50 customers depositing a check, 17 received some cash back. Construct a 90 percent confidence…

A: We hav eto find 90% confidence interval....

Q: Fatima bought a box containing 122 sweets of different colors, 19 of them in red. What is the 95%…

A: The Probability of red sweets is given by: P=19122=0.1557 The z-score for 95% confidence is given…

Q: In a survey of 1219 U.S. adults, 354 said that their favorite sport to watch is football. Construct…

A: According to the given information, we have Total number of U.S. adults = 1219 354 said that their…

Q: How much more likely are alcoholics to say sober for a year after counseling if their best friend is…

A: 1. The sample proportion for best friends were not alcoholics stayed sober for the year is,…

Q: Astudent polls his school to see if students in the school district are for or against the new…

A: We have given that  Sample size N=600 and favorable cases X=480 Sample proportion p^=X/N

Q: When Mendel conducted his famous genetics experiments with peas, one sample of offspring consisted…

A: a. The sample proportion of yellow peas is, Thus, the sample proportion of yellow peas is 0.262.

Q: The last poll of 144 voters in Iowa shows that 19% of voters will vote for him in the Iowa…

A: From the given information,Sample size(n) = 144,Sample proportion (p) = 0.19.Confidence level (1-α)…

Q: When 500 college students were surveyed, 30% said that they own their car. Construct a 95%…

A: Here we want to find the 95% confidence interval.

Q: Find the 95% confidence interval.

A: here from given information   pcs^ = 0.85 pcg^ = 0.75 ncs = 100   , ncg = 160

Q: Out of 3064 respondants, 919 of them said they have a dog. Using this data, compute a 95% confidence…

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Q: Of 130 adults selected randomly from one town, 25 of them smoke. Construct a 99% confidence interval…

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Q: A local health centre noted that in a sample of 400 patients, 80 were referred to them by the local…

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Q: In a survey of 2273 ​adults, 728 say they believe in UFOs.   Construct a 99% confidence interval for…

A: Given Information: Sample size (n) = 2273 Out of which X = 728 adults say they believe in UFOs. To…

Q: The Pizza Shop wanted to determine what proportion of its customers ordered an only cheese pizza.…

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