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confidence level of 80% what does that transcribe to? e.g. 90% confidence level is = Za/2 of 1.960

The makers of a soft drink want to identify the average age of its consumers. A sample of 16 consumers is taken. The average age in the sample was 22.5years with a standard deviation of 5 years. construct a 95% confidence level 22.5+ 1.96 5/ square root of 16 = 1.96 x 5/4 = 1.96 x 1.25 = 2.45 now do the same thing with 80 % confidence level. -

Subject:

Statistics

Topic:

All Topics

Posting ID:

2696

OTA ID:

101202

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Permutations: The maximum number of distinct arrangements.

How many distinct ways are there to arrange the letters in the word PARALLEL so that (a)the "P" and the "R" occur next to each other; (b)the "P" and the "R" do not occur adjacent to each other; (c)there are no consecutive L's

Subject:

Statistics

Topic:

All Topics

Posting ID:

2703

OTA ID:

103020

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statistics

A fair die is rolled until win or loss occurs: For k=1 to 5: if a 6 occurs on the kth roll you win N dollars and game ends; if a number5: if a 6 occurs on the kth roll you win N dollars and the game ends; if a number<5 occurs you lose $10 and the game ends; if a 5 occurs you roll again. what value should N have for this game to be fair?

Subject:

Statistics

Topic:

All Topics

Posting ID:

2704

OTA ID:

102827

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statistics

A bowl contains R red and W white chips. Suppose N chips are drawn without replacement from the bowl. (a) what is the expected number of red chips among the N drawn? The expected number of white chips? (b) Justify your answers from part(a)

Subject:

Statistics

Topic:

All Topics

Posting ID:

2705

OTA ID:

102827

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statistics

Suppose a sequence of independent trials is performed where each trial results in either success or failure. Suppose X=the number of failures before the first success, with p=probability of success on any one trial. (a) Find the expected value of X. Be sure to show in detail how you got your answer. (b) Carefully interpret the result in (a)

Subject:

Statistics

Topic:

All Topics

Posting ID:

2706

OTA ID:

102799

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