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As part of a study of the cost of attending art school, you want to test the claim that the mean cost of one credit hour is less than $580. A random sample of 15 art schools has a mean of $572.48. Assume the population standard deviation is $99.20 and the population is normally distributed. Use 0.07
(a) Write the null hypothesis and alternative hypotheses mathematically and state which one is the claim.
H0: ____________ Ha: ____________ Claim: ___________________
(a) What is the critical value?
(b) What is the standardized test statistic?
(c) Should you Reject H0 or Fail to reject H0?
(d) There is sufficient / insufficient evidence to reject / support the claim.
The paper "Turning to Learn: Screen Orientation and Reasoning from Small Devices" (Computers in Human Behavior [2011]: 793-797) describes
an order for a computer can specify any one of three memory sizes any one of two types of displays and any one of four
Use the data above to find a 90% confidence for the population average, µ, of the percentage of hospitals providing at least some charity care.
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Define a random variable to be X = number selected - nearest integer . - What is the domain of this random variable?
For a year to be in the upper 5% with respect to the number of fatal crashes, determine how many fatal crashes would have to occur.
what is the decision rule for a hypothesis test about the dierence between two population means if the p -value is
Ergodicity in the mean depends on the asymptotic behavior of the auto covariance of a process, cx(k). The asymptotic behavior of cx(k), however
Create a dot plot and a box plot to represent this data. If we create a sample by picking every 3rd data from the population, how would your answer to part a change? Show your work
comparison of paired and unpaired samples test.in january 08 fifty clients of a county mental health mental retardation
A manufacturing process produces items whose weights are basically distributed. It is known that 22.57% of all the items produced, weigh between 100 grams up to the mean and 49.18% weigh from the mean up to 190 grams.
if the winning number has the digits 1, 2, 3, and 4 in any other order (there are23 such other orders). What is the expected amount you win?
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