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Nadya [2.5K]
3 years ago
5

If x = 8 and n = 3, Evaluate the following expression: 3x - 3n + 2

Mathematics
1 answer:
Firlakuza [10]3 years ago
5 0

Answer:

7

Step-by-step explanation:

3x8-3x3+2

24-3x3+2

24-9+2

15+2

=17

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A local car dealer claims that 25% of all cars in San Francisco are blue. You take a random sample of 600 cars in San Francisco
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Step-by-step explanation:

a) We would set up the hypothesis test.

For the null hypothesis,

p = 0.25

For the alternative hypothesis,

p ≠ 0.25

b) The test statistic to be used is the z test. The formula is

z = (P - p)/√pq/n

c) Considering the population proportion, probability of success, p = 0.25

q = probability of failure = 1 - p

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Sample proportion, P = x/n

Where

x = number of success = 141

n = number of samples = 600

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