Population possess a given characteristic
Suppose 40% of the population possess a given characteristic. If a random sample of size 300 is drawn from the population, then the probability that 44% or fewer of the sample possess the characteristic is a. .0793 b. .4207 c. .9207 d. 1.0000
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A study has show that a certain injured lion will capture it prey about once in every ten attempts.
Assuming that other factors are held constant, which of the following would tend to increase the likelihood of rejecting the null hypothesis?
A quality control inspector has drawn a sample of 13 light bulbs from a recent production lot. If the number of defective bulbs is 2 or less, the lot passes inspection. Suppose 20% of the bulbs in the lot are defective. What is the probability tha
The following data comes from the 2011 Behavioral Risk Factor Surveillance System (BRFSS) survey, which is run by the Centers for Disease Control (CDC). This is a joint probability table for the proportions of survey respondents who smoke and who
Scientists studying a particular species of endangered primate are concerned that the health of the primates is in danger due to habitat loss and malnutrition. Even a slight decrease in average body weight is of great concern. Over the summer, eac
Find the probability that the sea urchin will require 4 or more hours to ingest a 5 cm. blade of turtle grass. Find the probability that a sea urchin will require between 2 and 3 hours to ingest a 5 cm. blade of green turle grass.
In a poll to estimate presidential popularity, each person in a random sample of 990 voters was asked to agree with one of the following statements: 1. The president is doing a good job.
A set of final examination grades in an introductory statistics course was found to be normally distributed with a mean of 73 and a standard deviation of 8.
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