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You are conducting a multinomial hypothesis test for the claim that the 4 categories occur with the following frequencies:
Ho: pA=0.4; pB=0.25; pC=0.1; pD=0.25
Category Observed frequency Expected Frequency Squared Residual
A 35________________________________________________
B 27________________________________________________
C 30_________________________________________________
D 43________________________________________________
What is the chi-square test-statistic for this data?
χ2= ______________________________
Report all answers accurate to three decimal places.
suppose that two 4-sided dice are rolled that is each die has faces with numbers 1 2 3 amp 4. what is the probability
Describe the sampling distribution of the sample proportion
Ha: µ?10 a sample of n=50 observations possessed mean =10.7 and standard deviation s =2.6. Find and interpret the? p-value for this test.
A teller can process an average of 100 customers per hour, which also can be modeled by a Poisson distribution. If there is one teller on duty, determine:
determine the sample proportions.bdecide whether using the two-proportions z-procedures is appropriate.if soalso do
The fracture strength of a certain type of manufactured glass is normally distributed with a mean of 558 MPa with a standard deviation of 14 MPa.
Reconsider Prob. 20.7-9. Despite some fluctuations from year to year, note that there has been a basic trend upward in the annual demand for copper ore over the past 10 years.
Why was it important to randomize in deciding who would exercise?- What would be the advantages and disadvantages of using 100 subjects instead of 40?
A sample histogram indicates that the data are highly skewed to the right. Is this a reliable indication that if all individuals of interest could be measured, the resulting histogram would also be highly skewed?
Find the standard deviation of this sample of shopping times. Round your answer to at least two decimal places.
A real estate agent wants to compare the variation in the selling price of homes on the oceanfront with those 3 blocks away A sample of 21 oceanfront homes sold within the last year revealed the standard deviation of the selling prices was 45,600.
Compare the words per day spoken by the men with the words per day spoken by the women using the Wilcoxon rank sum test. Summarize your results and conclusion in a short paragraph.
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