Suppose a random sample of n= 280 teenagers 13 to 17 years of age was asked if they use social media. Of those surveyed, 207 stated that they do use social media. Find the sample proportion of teenagers 13 to 17 years ofage who use social media.%3DThe sample proportion is p3=(Round to three decimal places as needed.)

Given Number of sample of teenagers between 13 to 17 year of ages(n)=280

Answered: sample proportion is p= und to three…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Please answer question 2 using the information in question 1! Thank You!
A study was conducted on the percent of total advertising dollars spent by 4 local firms for advertising in the press and on cable television. Results were ranked with a resulting sum of squared differences equal to 5. What is the computed value of t? O 0.884 0.969 O 1.504 O 0.816 8
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately 32%. You would like to be 95% confident that your estimate is within 2% of the true population proportion. How large of a sample size is required? n = Question Help: D Post to forum Submit Question 吴☆母 NOV 2 12 W 3D ロ
Bill Alther is a zoologist who studies Anna's hummingbird (Calypte anna). (Reference: Hummingbirds, K. Long, W. Alther.) Suppose that in a remote part of the Grand Canyon, a random sample of six of these birds was caught, weighed, and released. The weights (in grams) were as follows. 3.7 2.9 3.8 4.2 4.8 3.1 The sample mean is = 3.75 grams. Let x be a random variable representing weights of hummingbirds in this part of the Grand Canyon. We assume that x has a normal distribution and ? = 0.64 gram. Suppose it is known that for the population of all Anna's hummingbirds, the mean weight is ? = 4.30 grams. Do the data indicate that the mean weight of these birds in this part of the Grand Canyon is less than 4.30 grams? Use ? = 0.10. (a) What is the level of significance? (Enter a number.)State the null and alternate hypotheses. Will you use a left-tailed, right-tailed, or two-tailed test? H0: ? = 4.3 g; H1: ? ≠ 4.3 g; two-tailedH0: ? < 4.3 g; H1: ? = 4.3 g; left-tailed H0:…
Each person in a random sample of 20 students at a particular university was asked whether he or she is registered to vote. The responses (R = registered, N = not registered) are given here: NRRRRNRRN R N N N N N N RR NN Use these data to estimate p, the true proportion of all students at the university who are registered to vote.
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Cumulative frequency Male Beagles 50- 45- 40- 35- 30- 25- 20- 15- 10- 5- 0- 19.5 22.5 25.5 28.5 31.5 34.5 Weight (in pounds) 55-
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sample proportion is p= und to three decimal places as needed.)