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Ludmilka [50]
2 years ago
10

It is reported in USA Today that the average flight cost nationwide is $445.99. You have never paid close to that amount and you

want to perform a hypothesis test that the true average is actually greater than $445.99. What are the appropriate hypotheses for this test
Mathematics
1 answer:
nlexa [21]2 years ago
5 0

Answer:

H_0 : \mu \leq 445.99

H_a : \mu > 445.99

Step-by-step explanation:

It is given the average cost of the flight nationwide is $ 445.99

I wanted to \text{perform the hypothesis test} to determine that the true average is greater than $ 445.99

Let the hypothesis that the true average is actually greater than $445.99

Therefore,

the \text{null hypothesis} for the test is :

H_0 : \mu \leq 445.99

And the alternate hypothesis is :

H_a : \mu > 445.99

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Write an algebraic expression for the word phrase. five fewer than d days d – 5 5 + d 5 – d d + 5
Troyanec [42]

Answer:

(d-5)

Step-by-step explanation:

we know that

The phrase"five fewer than d days" is equal to subtract 5 from the number d

so

d minus 5-----> (d-5)

7 0
2 years ago
Read 2 more answers
Mr. Jones wants to place a chimney on his roof. It is recommended that the chimney be set at a height of at least 30 feet. The h
Tom [10]

Absolute value of any number is always positive because it represent distance and distance will always positive.

To place chimney at  least 30 feet , the distance along the width of the roof  (x) will be  x = 17.5 feet or x = 2.5 feet.

Since, The height of the roof is described by the function f(x)=−4/3|x−10| + 40

Since, minimum height is 30 feet.

So , substitute f(x)=30 in above expression.

                 30=−4/3|x−10| + 40

                   4/3|x−10| = 10

                      |x−10|=30/4

                      |x−10| = 7.5

Taking positive case,

                           x−10 = 7.5

                           x = 17.5 feet

Taking negative case,

                          x−10 = - 7.5

                          x = 10 - 7.5

                          x = 2.5 feet

Learn more:

brainly.com/question/14473339

7 0
2 years ago
PLEASE HELP NEED NOW!!!
ddd [48]
If the number of adult tickets are taken as x then the number of children’s tickets can be taken as (89 — x ) then we can set up the equation

4.10(x) + 2.70 (89 — x) = 331.30
4.10x + 240.3 — 2.70x = 331.30
1.4x = 331.30 — 240.30
1.4x = 91
X = 65

Therefore 65 adult tickets and 24 children tickets as 89 — 65 is 24
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C, x = +-7. Difference of squares
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3 years ago
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Which shows a reflection of the triangle?
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C, or the last photo, shows a reflection.
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