Statistical power is related to: a. effect size b. the probability of correctly rejecting the null hypothesis c. the probability of not making a Type 1 error d. the probability of not making a Type 2 error
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Statistical power is related to:
a. effect size
b. the probability of correctly rejecting the null hypothesis
c. the probability of not making a Type 1 error
d. the probability of not making a Type 2 error
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- A Japanese firm which maks electronic goods have fond that the 0.1% of products are defective. The probability that randomly selected product is defective is a/an … Select one: a. subjective probability b. apriori probability c. empirical probabilityD An oil company purchased an option on land in Alaska. Preliminary geologic studies assigned the following prior probabilities. P(high-quality oil) = 0.40 P(medium-quality oil) = 0.25 P(no oil) = 0.35 a. What is the probability of finding oil (to 2 decimals)? b. After 200 feet of drilling on the first well, a soil test is taken. The probabilities of finding the particular type of soil identified by the test are given below. P(soil|high-quality oil) = 0.25 P(soil|medium-quality oil) = 0.90 P(soil|no oil) = 0.25 %3D Given the soil found in the test, use Bayes' theorem to compute the following revised probabilities (to 4 decimals). P(high-quality oil|soil) P(medium-quality oil soil) P(no oil soil) What is the new probability of finding oil (to 4 decimals)? According to the revised probabilities, what is the quality of oil that is most likely to be found? - Select your answer -The term "p-value," which comes into play in the analysis and conclusions steps of the scientific method, can be defined as: O The probability that the alternative hypothesis is true. O The probability that the null hypothesis is true. O The probability of obtaining your data, or something even more extreme, if the null hypothesis is true. The probability that you should reject your alternative hypothesis.
- Discuss the implications of nonresponse error; consider this to be questionnaires that are sent to a sample and are not returned. For example say 400 people are selected for a probability sample but only 200 complete and return the survey. Also discuss ways to deal with nonresponse error and to discover whether or not it is a problem. A critical issue here is how to go about proving that the sample results that are actually obtained are representative of the population. What can be done to corroborate this?The table below shows the results of a survey that asked 1058 adults from a certain country if they favored or opposed a tax to fund education. A person is selected at random. Complete parts (a) through (c). Support Oppose Unsure Total Males 154 327 490 Females 243 293 32 568 Total 397 620 41 1058 (a) Find the probability that the person opposed the tax or is female. P(opposed the tax or is female) = 0.846 (Round to the nearest thousandth as needed.) (b) Find the probability that the person supports the tax or is male. P(supports the tax or is male) = 0.693 (Round to the nearest thousandth as needed.) (c) Find the probability that the person is not unsure or is female. P(is not unsure or is female) = Incorre (Round to the nearest thousandth as needed.)The election returns showed that Letty Doblado received 65% of the votes. What is the probability that two random samples, each consisting of 200 voters, indicated a greater than 10% difference in proportion that voted for her? A) .0410 B) .09590 C) .0459 D) .0541
- A variable y of a finite population has the frequency distribution shown in the table. Suppose a member is selected at random from the population and let Y denote the value of the variable y for the member obtained. Complete parts (a) through (d) below. y 3 4 6. f 1 1 11 7 a. Determine the probability distribution of the random variable Y. 3 y P(Y = y) (Type integers or decimals. Do not round.) b. Use random-variable notation to describe the events that Y takes on the value 5, a value less than 5, and a value of at least 5. The event that Y takes on the value 5 can be represented as The event that Y takes on a value less than 5 can be represented as The event that Y takes on a value of at least 5 can be represented as { }. c. Find P(Y = 5), P(Y 5). %3D P(Y = 5) = (Type an integer or a decimal. Do not round.) P(Y<5) = (Type an integer or a decimal. Do not round.) P(Y 2 5) = (Type an integer or a decimal. Do not round.) LOAn oil company purchased an option on land in Alaska. Preliminary geologic studies assigned the following prior probabilities. P(high-quality oil) = 0.45 P(medium-quality oil) = 0.25 P(no oil) = 0.30 a. What is the probability of finding oil (to 2 decimals)? b. After 200 feet of drilling on the first well, a soil test is taken. The probabilities of finding the particular type of soil identified by the test are given below. P(soil|high-quality oil) = 0.15 P(soil|medium-quality oil) = 0.90 P(soil|no oil) = 0.15 Given the soil found in the test, use Bayes' theorem to compute the following revised probabilities (to 4 decimals). P(high-quality oil|soil) P(medium-quality oil soil) P(no oil soil) What is the new probability of finding oil (to 4 decimals)? According to the revised probabilities, what is the quality of oil that is most likely to be found? Select your answer:An oil company purchased an option on land in Alaska. Preliminary geologic studies assigned the following prior probabilities. P(high-quality oil) = 0.45 P(medium-quality oil) = 0.25 P(no oil) = 0.30 a. What is the probability of finding oil (to 2 decimals)? 0.70 b. After 200 feet of drilling on the first well, a soil test is taken. The probabilities of finding the particular type of soil identified by the test are given below. P(soil high-quality oil) = 0.20 P(soil medium-quality oil) = 0.90 P(soil no oil) 0.20 Given the soil found in the test, use Bayes' theorem to compute the following revised probabilities (to 4 decimals). P(high-quality oil soil) 0.2308 P(medium-quality oil soil) 0.5769 X P(no oil soil) 0.1538 What is the new probability of finding oil (to 4 decimals)? Medium-quality 0.8077 According to the revised probabilities, what is the quality of oil that is most likely to be found?
- The purpose of statistical process control is to ensure that output is random O a. True O b. FalseIn an animal shelter, 100 cats and 50 dogs are being accommodated. Table below shows age group of the cats and dogs. a.Is the probability of being old equal in cats and dogs? Make a hypothesis test and report a p-value. b. What is the power of the test in part a? c.Why are there more old animals in shelters than young ones?