A hypothesis will be used to test that a population mean equals 7 against the alternative that the population mean does not equa
l 7 with unknown variance. What are the critical values for the test statistic T0 for the following significance levels and sample sizes?
(a) ? = 0.01 and n = 20 (b) ? = 0.05 and n = 12 (c) ? = 0.10 and n = 15
(a) ? = 0.01 and n = 20 (b) ? = 0.05 and n = 12 (c) ? = 0.10 and n = 15
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Answer:
The probability that the card selected bears a number less than 34 is 0.3333.
Step-by-step explanation:
Let random variable <em>X</em> be defined as the number on the selected card.
There are <em>N</em> = 15 total cards.
The number on the cards are as follows:
S = {25, 26, 27,..., 38, 39}
The probability of an event, <em>E</em> is the ratio of the number of favorable outcomes to the total number of outcomes.
In this case we need to compute the probability that the card selected bears a number less than 34.
The favorable outcomes are:
<em>s</em> = {25, 36, 37, 38, 39}
<em>n</em> (X < 34) = 5
Compute the probability that the card selected bears a number less than 34 as follows:
Thus, the probability that the card selected bears a number less than 34 is 0.3333.