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IrinaK [193]
3 years ago
7

Three freshmen, 3 sophomores, 3 juniors, and 3 seniors are participating on the debate team. The team's captain is randomly sele

cted from any grade level. What is the probability that a freshman will NOT be selected as captain?
Mathematics
2 answers:
kramer3 years ago
8 0

Answer:

3/4

Step-by-step explanation:

probability of any event = \frac{number of favourable outcomes}{total number of outcomes}

3 freshmen + 3 sophomores + 3 juniors + 3 seniors = 12 participants

∴the total number of participants = 12

P(freshman is a captain) = \frac{number of freshmen}{total number of participants}

                                       = \frac{3}{12}

                                       =\frac{1}{4}

P (freshman is not a captain) = 1 - \frac{1}{4}

                                                 = \frac{3}{4}

whenever the probability of an event not happening is being calculated, always subtract the possibility of the occurrence of such event from 1

VashaNatasha [74]3 years ago
6 0

Answer:3/4

Step-by-step explanation:

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NNADVOKAT [17]

Correct clear question is;

The null and alternative hypotheses are given. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed. What parameter is being tested? H_0: μ = 5 H_1: μ ≠ 5

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Answer:

A) C - Two tailed hypothesis

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Step-by-step explanation:

We are given the hypotheses to be;. Null Hypothesis; H_0: μ = 5

Alternative hypothesis; H_1: μ ≠ 5

From the alternative hypothesis, we can see that the critical area of distribution of the parameter being tested could either be less than 5 or greater than 5 due to the not equal to sign. This means it could either be left tailed or right tailed. Thus, it is a two tailed hypothesis.

From the hypothesis, we see that the symbol μ is being used.

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Step-by-step explanation:

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Answer and explanation please!!
Mandarinka [93]

Answer:

Area of the rhombus, A = 22.5 sq. ft.

Step-by-step explanation:

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