A state biologist is investigating whether the proportion of frogs in a certain area that are...
A state biologist is investigating whether the proportion of frogs in a certain area that are bullfrogs has increased in the past ten years. The proportion ten years ago was estimated to be 0.20. From a recent random sample of 150 frogs in the area, 36 are bullfrogs. The biologist will conduct a test of H0:p=0.20 versus Ha:p>0.20. Which of the following is the test statistic for the appropriate test?
z=0.20−0.24(0.24)(0.76)150√ A
z=0.20−0.24(0.20)(0.80)150√ B
z=0.24−0.20(0.24)(0.76)150√ C
z=0.24−0.20(0.20)(0.80)150√ D
z=0.24−0.20(0.20)(0.80)150−−−−−−−√ E
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A state biologist is investigating whether the proportion of
frogs in a certain area that are...
Women athletes at the a certain university have a long-term graduation rate of 67%. Over the...
Women athletes at the a certain university have a long-term
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Women athletes at the a certain university have a long-term
graduation rate of 67%. Over the past several years, a random
sample of 36 women athletes at the school showed that 22 eventually
graduated. Does this indicate that the population proportion of
women athletes who graduate from the university is now less than
67%? Use a 5% level of significance.
(a) What is the level of significance?
State the null and alternate hypotheses.
H0: p = 0.67;
H1: p <...
State whether the following statement is True or False. The area under the standard normal distribution curve from negative infinity to infinity is 1. Use the normalcdf feature on the calculator to find the specified area under standard normal distribution curve. Round your answers to four de the nearest ten-thousandth). To the right of z = 1.13 Question 3 (6 points) On the daily run of an express bus, the average number of passengers is 48. The standard deviation is...
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Be sure to turn in the table above along with your
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