Examlex
Conduct a full hypothesis test and determine if the given claim is supported or not supported at the 0.05 significance level. Round all amounts and standard scores to two decimal places.
-In 1990, the average math SAT score for students at one school was 475. Five years later, a teacher wants to perform a hypothesis test to determine whether the average math SAT score of students at the school has changed. He picks a random sample of 60 students and obtains their mean math SAT score, which is 469. Test whether the claim that the average math SAT score at the school has dropped from 475 is supported or not
Supported. Assume that
Consumption
The process of using goods and services to satisfy needs and wants.
Nonlabor Income
Income received from sources other than employment or work effort, such as dividends, interest, or rent.
Quinces
A fruit related to apples and pears, with a yellow exterior and hard flesh, often used in cooking and making preserves.
Kumquats
Small, orange-colored, and edible citrus fruits with a sweet outer peel and tart inner flesh, commonly eaten whole or used in marmalades and jellies.
Q29: The fuel economy of a car is
Q31: A salesperson packed 3 shirts and 5
Q31: Assume that the weights of nickels are
Q77: Bill kept track of the number
Q86: If two cards are drawn at
Q91: License plates are made using 3 letters
Q93: Suppose you buy 1 ticket for $1
Q114: A mouse is at the bottom of
Q142: The 9th term of 6, 5.7, 5.4,
Q149: 76 - 74 + 72 - 70