Question 3) Given that, n = 111 and p = 0.54
Using TI-84 calculator we get,
Question 4)
Given that, p = 0.64 and n = 65
The mean and standard deviation of the sampling distribution of p-hat are,
Therefore, the mean of is 0.64
the standard deviation is 0.0595
Question 3 of 8 (1 point) 6.3 Section Exercise 9-14 (ca Below, n is the sample...
in a pop-Up Question 4 of 8 (1 point) View problem | A poll agency reports that 64% of teenagers aged 12-17 own smartphones. A random sample of 65 teenagers is drawn. Round your answers to four decimal places as needed Part 1 out of 6 Find the mean μ . The mean Hpis
A poll agency reports that 47% of teenagers aged −12-17 own smartphones. A random sample of 147 teenagers is drawn. Round your answers to at least four decimal places as needed. (d) Find the probability that the proportion of the sampled teenagers who own a smartphone is between 0.44 and 0.55 The probability that the proportion of the sampled teenagers who own a smartphone is between 0.44 and 0.55 is
Smartphones: A poll agency reports that 32% of teenagers aged 12-17 own smartphones. A random sample of 100 teenagers is drawn. Round your answers to at least four decimal places as needed. (e) Find the probability that less than 35% of sampled teenagers own smartphones. The probability that less than 35% of sampled teenagers own smartphones is?
Smartphones: A poll agency reports that 52% of teenagers aged 12-17 own smartphones. A random sample of 200 teenagers is drawn. Round your answers to at least four decimal places as needed. (c) Find the probability that more than 55% of the sampled teenagers own a smartphone. The probability that more than 55% of the sampled teenagers own a smartphone is
Part 3 Smartphones: A poll agency reports that 47% of teenagers aged 12-17 own smartphones. A random sample of 147 teenagers is drawn. Round your answers to at least four decimal places as needed. Part 1 of 6 (a) Find the mean pa. The mean ula is 0.47 Part 2 of 6 (b) Find the standard deviation on. The standard deviation A is 0.0412 Part: 2/6 Part 3 of 6 (c) Find the probability that more than 50% of the...
Smartphones: A poll agency reports that 48% of teenagers aged 12-17 own smartphones. A random sample of 150 teenagers is drawn. Round your answers to at least four decimal places as needed. Part 1 of 6 (3) Find the meant The mean is 0.48 Part 2 of 6 (b) Find the standard deviation or The standard deviation GA is 0.0408 Part 3 of 6 (c) Find the probability that more than 50% of the sampled teenagers own a smartphone. The...
Question 1 of 2 (1 point) Attempt 1 of Unlimited 7.5 Section Exercise Below, n is the sample size, p is the population proportion of successes, and X is the number of successes in the sample. Use the normal approximation and the TI-84 Plus calculator to find the probability. Round the answer to at least four decimal places. n=80, p=0.45 P(X<42) -
Question 21 of 24 (1 point) 6.3 Section Exercise 8 A survey found that the American family generates an average of 17.2 pounds of glass garbage each year. Assume the standard deviation of the distribution is 2.5 pounds. Find the probability that the mean of a sample of 58 families will be between 17.1 and 18.1 pounds. Assume that the sample is taken from a large population and the correction factor can be ignored. Round your final answer to four...
Below, n is the sample size, p is the population proportion and p-hat is the sample proportion. Use the Central Limit Theorem and the TI-84 calculator to find the probability. Round the answer to at least four decimal places. n=48 p=0.14 Find P(0.11< p-hat < 0.19) =_________
Question 11 of 13 (1 point) Attempt 1 of Unlimited 6.3 Section Exercise Life of Smoke Detectors The average lifetime of smoke detectors that a company manufactures is 5 years, or 60 months, and the standard deviation is 7 months. Find the probability that a random sample of 27 smoke detectors will have a mean lifetime between 58 and 62 months. Assume that the sample is taken from a large population and the correction factor can be ignored. Round the...