a meteorologist who sampled 16 thunderstorms found that the average speed at which they traveled across a certain states was 14 miles per hour.

#4 PART 8

a meteorologist who sampled 16 thunderstorms found that the average speed at which they traveled across a certain states was 14 miles per hour. The standard deviation of the sample was 1.3 miles per hour.

find the 92% confidence interval of the mean

the number of unhealthy days based on the AQI (Air Quality Index) for a. random sample of metropolitan areas is shown. Construct an 87% confidence interval based on data. Assume variable is normally distributed.

61 40 5 14 21 23 3 15 6 50. ____ < u < _____

__________________________________________________

a random sample of 345 college students were asked if they believed that places could be haunted, and 35 responded yes. Estimate the true proportion of college students who believe in the possibility of haunted places with 90% confidence. According toTime magazine, 37% of Americans believe that places can be haunted. Round to five decimal places

____ < p < _____

in a study, 68% of 905 randomly selected adults said they believe in the republicans favor the rich. If the margin of error was 4 percentage points, what is the confidence level used for the proportion?

a federal report indicated that 26% of children under age 6 live in poverty in alabama, an increase over previous years. how large a sample is needed to estimate the true proportion of children under age 6 living in poverty in alabama within 5% with 99% confidence

n= _____

Obesity is defined as a body mass index (BMI) of 30 kg/m^2 or more. A 99% confidence interval for the percentage of U.S. men aged 70 years and over who were obese were found to be 20.0% to 21.0

n= ____ (it is NOT 43, 259)

it is believed that 25% of u.s. homes have direct satellite television receiver. 90% confidence within 2 percentage points?

n= _____

a recent study indicated that 23% of the 160 women over age 55 in the study were widows. how large a sample must you take to be 90% confident that the estimate is within 0.05 of the true proportion of women over age 55

n=_____

in a recent year, a study found that 78% of adults ages 18-29 had internet access at home. Did research on 182 undergraduates total and found that 166 had access. Estimate the true proportion with 90% confidence.

_____ < p < ____

Expert Solution

orchestra answered 2 years ago

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