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lozanna [386]
3 years ago
12

Breyers is a major producer of ice cream and would like to test the hypothesis that the average American consumes more than 17 o

unces if ice cream per month. A random sample of 15 Americans was found to consume an average of 18.2 ounces of ice cream last month. The standard deviation for this sample was 3.9 ounces. Breyers would like to set ? = 0.10. The p-value for this hypothesis test would be between
Mathematics
1 answer:
zhenek [66]3 years ago
3 0

Answer:

The p-value would be 0.0939

Step-by-step explanation:

We can set a standard t-test for the Null Hypothesis that H_0: 18.2\geq 17

The test statistic then takes the form

t=\frac{18.2-17}{3.9/\sqrt{15}}=1.317

with this value we then can calculate the probability that is left to the right of this value P(X>1.317). From theory we know that t follows a standard normal distribution. Then P(X>1.317)=0.0939 which is smaller than the p-value set by Breyers of 0.10

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BigorU [14]

Answer:

1 r= 68/55

2 no solution

Step-by-step explanation:

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3 years ago
An express train travels 80km/h from Ironton to Wildwood. A local train, traveling at 48km/h, takes 2 hours longer for the same
masha68 [24]

Answer:

They are 240 kilometers apart.

Step-by-step explanation:

This question can be solved using the following relation:

v = \frac{d}{t}

In which v is the velocity, d is the distance and t is the time.

An express train travels 80km/h from Ironton to Wildwood.

Here we have v = 80, t = x. So

v = \frac{d}{t}

80 = \frac{d}{x}

d = 80x

A local train, traveling at 48km/h, takes 2 hours longer for the same trip.

This means that when v = 48, t = x + 2[tex]. So[tex]v = \frac{d}{t}

48 = \frac{d}{x+2}

Since d = 80x

48 = \frac{80x}{x+2}

Applying cross multiplication

80x = 48(x + 2)

80x = 48x + 96

32x = 96

x = \frac{96}{32}

x = 3

So the distance is:

d = 80x = 80*3 = 240

They are 240 kilometers apart.

3 0
3 years ago
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zalisa [80]
It’s is 1
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nadezda [96]
Answer:
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7 0
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Write the following statement as a conditional statement.
777dan777 [17]

Answer:

Correct choice is D

Step-by-step explanation:

A conditional statement, symbolized by p\Rightarrow q, is an if-then statement in which p is a <u>hypothesis</u> and q is a <u>conclusion</u>.

Given statement: "Stars have ten vertices", consider statements:

p="A figure is a star",

q="A figure has 10 vertices".

Then the conditional statement  p\Rightarrow q sounds as "If a figure is a star, then it has ten vertices."

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3 years ago
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