Given,
p = 35% = 0.35
n = 37
a)
It is possible to use the normal approximation to Binomial distribution because n*p =37*0.35 12.95 , which is > 5 and n*q =37*(1-0.35) = 24.05 , which is > 5
b)
= p = 0.35
32. Do you have a great deal of confidence in the advice given to Suppose a...
Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p. Round to three decimal places. Of 89 adults selected randomly from one town, 66 have health insurance. Find a 90% confidence interval for the true proportion of all adults in the town who have health insurance.
According to a study conducted in one city, 32% of adults in the city have credit card debts of more than $2000. A simple random sample of n=200 adults is obtained from the city. Describe the sampling distribution of p, the sample proportion of adults who have credit card debts of more than $2000. Round to three decimal places when necessary. Awnser this A B C D pick the correct awnser and make sure it correct I put it in...
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According to a survey in a country, 34% of adults do not own a credit card. Suppose a simple random sample of 300 adults is obtained. Complete parts (a) through (d) below. Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2) the sample proportion of adults who do not own a credit card. Choose the phrase that best describes the shape of the (a) Describe the sampling...
I need help answering this question Confidence in banks: A news poll conducted in 2012 asked a random sample of 1268 adults in the United States how much confidence they had in banks and other financial institutions. A total of 144 adults said that they had a great deal of confidence. An economist claims that less than 11% of U.S. adults have a great deal of confidence in banks. Can you conclude that the economist's claim is true? Use both...
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A random sample of 1002 adults in a certain large country was asked "Do you pretty much think televisions are a necessity or a luxury you could do without?" Of the 1002 adults surveyed, 516 indicated that televisions are a luxury they could do without. Complete parts (a) through (e) below. Click here to view the standard normal distribution table (page 1). LOADING... Click here to view the standard normal distribution table (page 2). LOADING... (a) Obtain a point estimate...
A random sample of 1028 adults in a certain large country was asked "Do you pretty much think televisions are a necessity or a luxury you could do without?" Of the 1028 adults surveyed, 527 indicated that televisions are a luxury they could do without. Complete parts (a) through (e) below. Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). (a) Obtain a point estimate for the...
"What do you think is the ideal number of children for a family to have?" A Gallup Poll asked this question of 1016 randomly chosen adults. Almost half (49%) thought two children was ideal.† We are supposing that the proportion of all adults who think that two children is ideal is p = 0.49. What is the probability that a sample proportion p̂ falls between 0.46 and 0.52 (that is, within ±3 percentage points of the true p) if the...
"What do you think is the ideal number of children for a family to have?" A Gallup Poll asked this question of 1016 randomly chosen adults. Almost half (49%) thought two children was ideal.† We are supposing that the proportion of all adults who think that two children is ideal is p = 0.49. B) What is the probability that a sample proportion p̂ falls between 0.46 and 0.52 if the sample is an SRS of size n = 5000?...