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A recent study evaluated how addicted teenagers become to nicotine once they start smoking. The response variable was the number of yes answers on a questionnaire called the Hooked on Nicotine Checklist (HONC).
Of teenagers who had tried tobacco, the mean HONC score was 4.2 (s1 =5.4) for the 149 females and 2.8 (s2 =4.2) for the 190 males.
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- Find the weighted estimate, p to test the claim that p, = p2. Use a = 0.05. The sample statistics listed below are from independent samples. n1 = 50, x1 = 35, and n2 = 60, x2 = 40 O A. 0.328 O B. 1.367 O C. 0.238 O D. 0.682 NexThe instructor takes a random sample of size from the population data and obtains the following sample data: x 405 385 495 385 555 470 9 The standard error of the sample mean is, a 29.37 b 28.24 c 27.15 d 26.11Compute for the sample mean, sample variance, and sample standard deviation. HEIGHT (cm) 157 cm 149 cm 162 cm 168 cm 155 cm 155 cm 157.48 cm 165 cm 157cm 157 cm
- 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; left-tailed H0: ? < 4.3 g; H1: ? = 4.3 g; left-tailed…Consider the given data set. n = 7 measurements: 5, 8, 2, 1, 9, 9, 5 Calculate the median. Calculate the upper quartile. Calculate the lower quartile.Find the estimated standard error for the sample mean for n = 8 and SS= 5042.
- 1) calculate the sample mean. 2) calculate the deviation and the squares of the deviations. 3) calculate the sample variance and the sample standard deviation. Provide your sample standard deviation answer a precise to one decimal place.determine whether the samples are independent or dependant. To test the effectiveness of a drug, cholesterol level are measured in 60 men and 60 women after the treatment.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:…
- f (x, y) y g (x) DIRE 135 1 0.05 0.05 0.00 0.10 K NX 0.05 0.10 0.20 0.35 3 0.10 0.35 0.10 0.55 h (y) 0.20 0.50 0.30 1Consider the population with the values {2.1, 3.3, 7.6, 8.5), list all possible samples of size n = 2 WITH REPLACEMENT and find: d. population mean e. population variance f. population standard deviation. Please write your solutions in a legible manner and draw a box around your final answers.st the sample space . Use the sample sp