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mart [117]
3 years ago
12

HELLLLLLLLLLLPPPPPPPPPPPPPP PLZ

Mathematics
1 answer:
Lilit [14]3 years ago
8 0
Its ok buddy your answer is C
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Based on the sample of n = 25 healthy-weight students, can you conclude that healthy-weight students eat significantly fewer fat
Elis [28]

Answer:

z = -1.645

Step-by-step explanation:

b) n =25, M = 4.01 , \mu = 4.22 , \sigma = 0.60 , \alpha= 0.05

The hypothesis are given by,

H0 : \mu\geq 4.22 v/s H1 : \mu < 4.22

The test statistic is given by,

Check attachment for the formula that should br here.

z = \frac{4.01- 4.22 }{0.60 /\sqrt{25}}

= -1.75

The critical value of z = -1.645

The calculated value z > The critical value of z

Hence we reject null hypothesis.

The healthy-weight students eat significantly fewer fatty, sugary snacks than the overall population.

8 0
2 years ago
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The price of a smart watch is $109.99 and the sales tax is 6.5%.
Sergeeva-Olga [200]

Answer:

17.14

Step-by-step explanation:

7 0
2 years ago
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HURRY. NEED To be done by 10:30
Zepler [3.9K]

Answer:

B) $822

Step-by-step explanation:

The total amount of money she spent can be found by adding her expenses:

312 + 287 + 112 + 111

Once added you get the total amount of:

$822

7 0
2 years ago
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Anyone? Please I need help!!
JulsSmile [24]

Answer:

  the correct choice is marked

Step-by-step explanation:

Let x represent the smaller number. Then the larger number is 8x, and the difference is ...

  8x -x = 280

  7x = 280 . . . . . simplify

  x = 40 . . . . . . divide by 7

The larger number is 8x = 8(40) = 320.

_____

<em>Additional comment</em>

Effectively, we have solved for the multiplier (40) that gives the ratio with 320 on top and a difference between top and bottom of 280:

  \dfrac{8}{1}=\dfrac{8\cdot40}{1\cdot40}=\dfrac{320}{40}

4 0
2 years ago
Convert 142 base four to base ten
liraira [26]
142_4=1\times4^2+4\times4^1+2\times4^0=16+16+2=34_{10}
8 0
3 years ago
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