In a random sample of 100 parts ordered from vendor A, 12 were defective. In a random sample of 200 parts ordered from vendor B, 10 were defective. a. Estimate the proportion of parts from vendor A that are defective and find the uncertainty
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2. In a random sample of 100 parts ordered from vendor A, 12 were defective. In a random sample of
200 parts ordered from vendor B, 10 were defective.
a. Estimate the proportion of parts from vendor A that are defective and find the uncertainty in
the estimate.
b. Estimate the proportion of parts from vendor B that are defective and find the uncertainty in
the estimate.
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- In a random sample of 100 parts ordered from vendor A, 12 were defective. In a random sample of 200 parts ordered from vendor B, 10 were defective. Estimate the proportion of parts from vendor A that are defective and find the uncertainty in the estimate. Estimate the proportion of parts from vendor B that are defective and find the uncertainty in the estimate.According to the CDC, only 20% of Americans get enough exercise each week. You conduct a survey of 200 people and find 45 who get enough exercise. a. What is the parameter? A. The proportion of people in the survey who get enough exercise. B. The proportion of all Americans who get enough exercise. C. All Americans. D. The people in the survey. E. All Americans who get enough exercise. b. What is the numerical value of the parameter? (If your answer is a proportion, enter it as a number between 0 and 1. If the numerical value is not known, enter “NA” without the quotes.) c. What is the statistic? A. All Americans who get enough exercise. B. The people in the survey. C. The proportion of people in the survey who get enough exercise. D. The proportion of all Americans who get enough exercise. E. The people in the survey who get enough exercise.d. What is the numerical value of the statistic? (If your answer is a proportion, enter it as a number between 0 and 1. If the numerical value is…A national caterer determined that 87% of the people who sampled their food said that it was delicious. A random sample of 144 people is obtained from a population 5000. The 144 people are asked to sample the caterer`s food. Will the distribution of pˆ,the sample proportion saying that the food is delicious, be approximately normal?
- The proportion of defective items is not allowed to be over 12%. A buyer wants to test whether the proportion of defectives in his shipment of 1000 items exceeds the allowable limit. The buyer takes a SRS of 100 items and finds that 19 are defective. State your conclusion Group of answer choices A. Evidence suggests the proportion of defectives exceeds the allowable limit. B. Inconclusive result. C. There is not enough evidence to suggest the proportion of defectives exceeds the allowable limit. D. Evidence suggests the proportion of defectives is significantly lower than the allowable limit.When spinning a penny, Claire believes the proportion of times the penny lands on heads is not 0.5. She spins a penny 50 times and it lands on heads 30 times. Which hypotheses would test Claire's claim? O Hoip = 0.6, Hap = 0.6 O Ho:p = 0.6, H p > 0.6 O Hoip = 0.5, H,p = 0.5 O Hoi p = 0.5, Ha p= 0.5The distribution of hemoglobin in grams per deciliter of blood if approximately N(14,1) in women and approximately N(16,1) in men. Use software or Table B to find the answers. A) What percent of women have more hemoglobin than the men's mean hemoglobin? B) What percent of men have less hemoglobin than the women's mean hemoglobin? C) What percent of men have more hemoglobin than the women's mean hemoglobin?
- 5.) Use the table below to:a. Calculate the absolute risk of food poisoning among those who ate fish and those who did not eat fish b. Calculate the relative risk of food poisoning among those who ate fish comparedto those who did not eat fish food poisoning no food poisoning ate fish 23 89 did not eat fish 45 167. What percent of the random samples from Bag 1 had between 30% and 50% red marbles? What percent of the random samples from Bag 2 had between 30% and 50% red marbles? f. What percent of the random samples from Bag 1 had between 70% and 90% red marbles? What percent of the random samples from Bag 2 had between 70% and 90% red marbles? g. Which bag is more likely to be the one with 40% red marbles and which bag is more likely to be the one with 80% red marbles? Why? h. A third bag of 50 marbles contains 50% red marbles and 50% black marbles. If students take random samples of 10 marbles from that bag, how do you think a dot plot for those random samples would compare to the dot plots for Bag 1 and Bag 2?Suppose the lengths of human pregnancies are normally distributed with µ = 266 days and o= 16 days. Complete parts (a) and (b) below. (Type integers or decimals.) A. The proportion of human pregnancies that last less than B. The proportion of human pregnancies that last more than days is days is Provide a second interpretation of the area using the given values. Select the correct choice below and fill in the answer boxes to complete your choice. (Type integers or decimals.) O A. The probability that a randomly selected human pregnancy lasts less than B. The probability that a randomly selected human pregnancy lasts more than (b) The figure to the right represents the normal curve with µ = 266 days and o = 16 days. The area between x = 280 and x = 295 is 0.1558. Provide two interpretations of this area. days is days is Provide one interpretation of the area using the given values. Select the correct choice below and fill in the answer boxes to complete your choice. (Type integers or…
- There are 435 seats in a nation's House of Representatives. The number of representatives per state is calculated using a statistical formula determined by law, but allocation is roughly proportionate to population. In 2010, the nation's population was estimated to be 309.1 million. The state's population was estimated at 26.1 million. How many representatives would you expect to be assigned to the state? Suppose the state actually has 34 representatives. Compare this with the expected number of representatives from the state.A researcher is testing Xanax and uses a focus group where individuals are assigned to one of two groups and different doses of Xanax. He then gets the participants to learn a list of 20 numbers and three days later sees how many they can recall. In the experiment the dependent measure is simply the number of numbers recalled by each participant. What type of variable is this? a. Nominal b. Ratio c. Interval d. OrdinalAs part of a sixth-grade class project the teacher brings to class a large jar containing 200 gumballs of two different colors: red and green. Andy is asked to draw a sample of his own choosing and estimate the number of red gumballs in the jar. Andy draws a sample of 25 gumballs, of which 21 are red and the rest are green. Use Andy's sample to estimate the number of red gumballs in the jar. Answer:
