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forsale [732]
2 years ago
12

After the math contest, Badil noticed that there where four extra large pizzas that where left untouched. In addiction, another

3 slices of pizza where uneaten. If there where a total of 51 slices of pizza left, how many slices does an extra large pizza have?
Mathematics
1 answer:
Sphinxa [80]2 years ago
4 0
51-3=48 slice.
48 slice/ 4 pizza= 12 slice
each extra large pizza have 12 slice.
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vitfil [10]

Answer:

y = 13x

Step-by-step explanation:

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3 years ago
In 2008, data from the Center for Disease Control revealed that 28.5% of all male teenagers, aged 18-19 and attending U.S. colle
m_a_m_a [10]

Answer:

a) H0 : u = 28.5%

H1 : u < 28.5%

b) critical value = - 1.645

c) test statistic Z= - 1.41

d) Fail to reject H0

e) There is not enough evidence to support the professor's claim.

Step-by-step explanation:

Given:

P = 28.5% ≈ 0.285

X = 210

n = 800

p' = \frac{X}{n} = \frac{210}{800} = 0.2625

Level of significance = 0.05

a) The null and alternative hypotheses are:

H0 : u = 28.5%

H1 : u < 28.5%

b) Given a 0.05 significance level.

This is a left tailed test.

The critical value =

-Z_0.05 = -1.645

The critical value = -1.645

c) Calculating the test statistic, we have:

Z = \frac{p' - P}{\sqrt{\frac{P(1-P)}{n}}}

Z = \frac{0.2625 - 0.285}{\sqrt{\frac{28.5(1-28.5)}{800}}}

Z = -1.41

d) Decision:

We fail to reject null hypothesis H0, since Z = -1.41 is not in the rejection region, <1.645

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5 0
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