Mathematics, 17.04.2020 21:14 kayranicole1

A recent study examined hearing loss data for 1507 U. S. teenagers. In this sample, 301 were found to have some level of hearing loss. News of this study spread quickly, with many news articles blaming the prevalence of hearing loss on the higher use of ear buds by teens. At MSNBC. com (8/17/2010), Carla Johnson summarized the study with the headline: "1 in 5 U. S. teens has hearing loss, study says." To investigate whether this is an appropriate or a misleading headline, you will conduct a test of significance with the following hypotheses: Null: π = 0.20 Alternative: π ≠ 0.20

Using the applet, find a 95% confidence interval for the proportion of U. S. teens that have some hearing loss. Round your answer to 4 decimal places, e. g. 0.7534.
The 95% confidence interval is to .

What is the margin of error for your confidence interval from part (d) of this question? Round your answer to 4 decimal places, e. g. 0.7534.
Margin of error =

the absolute tolerance is +/-0.0005

Based on your confidence interval, 0.20 is a plausible value for the proportion of the population that has some hearing loss.

a. True
b. False

Based on your p-value, 0.20 is a plausible value for the proportion of the population that has some hearing loss.

a. True
b. False

Answers: 1

Show answers

Another question on Mathematics

Mathematics, 21.06.2019 13:40

Cam bought some used books for $4.95. he paid $0.50 each for some books and $0.35 each for the others. he bought fewer than 8 books at each price. how many books did cam buy?

Answers: 1

Answer

Mathematics, 21.06.2019 17:00

The table shows population statistics for the ages of best actor and best supporting actor winners at an awards ceremony. the distributions of the ages are approximately bell-shaped. compare the z-scores for the actors in the following situation. best actor best supporting actor muequals42.0 muequals49.0 sigmaequals7.3 sigmaequals15 in a particular year, the best actor was 59 years old and the best supporting actor was 45 years old. determine the z-scores for each. best actor: z equals best supporting actor: z equals (round to two decimal places as needed.) interpret the z-scores. the best actor was (more than 2 standard deviations above more than 1 standard deviation above less than 1 standard deviation above less than 2 standard deviations below) the mean, which (is not, is) unusual. the best supporting actor was (less than 1 standard deviation below more than 1 standard deviation above more than 2 standard deviations below more than 1 standard deviation below) the mean, which (is is not) unusual.

Answers: 1

Answer

Mathematics, 21.06.2019 18:30

Write the rational number in lowest terms 99/-15

Answers: 2

Answer

Mathematics, 21.06.2019 23:40

Rounded to the nearest tenth, what is the value of x

Answers: 1

Answer

You know the right answer?

A recent study examined hearing loss data for 1507 U. S. teenagers. In this sample, 301 were found t...