Insurance companies are interested in knowing the population percent of drivers who always buckle up before riding in a car. They randomly survey 419 drivers and find that 305 claim to always buckle up. Construct a 85% confidence interval for the population proportion that claim to always buckle up. .696627Incorrect

Q: Of 500 random people surveyed, 72 were smokers.  Find the 95% confidence interval. SE=0.0157

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Q: Out of 240 sample students surveyed, 187 students are planning to take classes during the…

A: We have given that the sample size n=240 and favourable cases X=187. Sample proportion p^ = X/n.

Q: Find the margin of error for the 95% confidence interval used to estimate the population proportion.…

A: Confidence level = 95% Sample size (n) = 2440 Sample proportion (p̂) = 0.70

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Q: one with a 95% confidence level and the other with a 99.7% confidence level. Which interval is…

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Q: Which of the following confidence intervals would have a wider width for the same set of data? A 90%…

A: We have to find which of the following confidence intervals would have a wider width for the same…

Q: In a survey of 2298 ​adults, 709 say they believe in UFOs. Construct a 95% confidence interval for…

A:

Q: Suppose that insurance companies did a survey. They randomly surveyed 450 drivers and found that 310…

A: Obtain 95% confidence interval for the population proportion that claim to always buckle up. The 95%…

Q: The figure to the right shows the results of a survey in which 2500 college graduates from the year…

A: Expected to their first employer for 3 or more years: The sample size n= 2500.for The sample…

Q: A survey​ asked, "How many tattoos do you currently have on your​ body?" Of the 1202 males​…

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Q: In a survey of 2308 adults, 724 say they believe in UFOS. Construct a 90% confidence interval for…

A: Solution: Let X be the number of adults who believe in UFOs and n be the sample number of adults.…

Q: In a survey of 2286 ​adults, 745 say they believe in UFOs.   Construct a 90% confidence interval for…

A: Proportion is almost similar to the concept of probability. Proportion is a fraction of population…

Q: Find 90% confidence interval for the true proportion of all medical students who plan to work in a…

A: Given : Sample Size, n = 300 Number of successes, x = 30

Q: thirty randomly selected students took the calculus final. if the sample mean was 91 and the…

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Q: In a survey of 2480 golfers, 372 said they were left-handed. Construct a 92% confidence interval for…

A: GIVEN DATA : Total number of golfers are 2480, Number of left handed golfer are 372        TO FIND :…

Q: y of 2250 ​adults, 732 say they believe in UFOs. Construct a 99%confidence interval for the…

A: The sample proportion of adults who believe in UFOs will be   The critical value from the normal…

Q: Assume a nationwide random survey of 800 adults asked about attitudes toward “alternative medicine”…

A: We have given that,  Sample size (n) = 800 and Favorable cases (X) =448 Then,  We will find the 99%…

Q: A survey asked, "How many tattoos do you currently have on your body?" Of the 1217 males surveyed,…

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Q: In a survey of 6000 high school students, 3230 read books during the summer break. Using these…

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Q: A survey found that out of 800 workers, 150 said they were interrupted by frank phone calls. Find…

A: Given,n=800x=150p^=xnp^=150800=0.18751-p^=1-0.1875=0.8125α=1-0.95=0.05α2=0.025Z0.025=1.96

Q: In a survey of 3919 adults, 708 say they have seen a ghost. Construct a 99% confidence interval for…

A:

Q: A survey asked, "How many tattoos do you currently have on your body?" Of the 1207 males surveyed,…

A:

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.