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Viefleur [7K]
3 years ago
14

Help me out I gotta good grade to graduate

Mathematics
1 answer:
Dahasolnce [82]3 years ago
3 0

Answer: c

Step-by-step explanation:

Because it makes sense to me

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If in a sample of 355 adult males, we have a mean total cholesterol level of 185 mg, with s = 16. What is the 95% confidence int
sladkih [1.3K]

Answer:

Step-by-step explanation:

We want to determine a 95% confidence interval for the mean total cholesterol level of all males.

Number of sample, n = 355

Mean, u = 185 mg

Standard deviation, s = 16

For a confidence level of 95%, the corresponding z value is 1.96. This is determined from the normal distribution table.

We will apply the formula

Confidence interval

= mean +/- z ×standard deviation/√n

It becomes

185 +/- 1.96 × 16/√355

= 185 +/- 1.96 × 0.849

= 185 +/- 1.66404

The lower end of the confidence interval is 185 - 1.66404 =183.336

The upper end of the confidence interval is 185 + 1.66404 = 186.66

Therefore, with 95% confidence interval, the mean total cholesterol level of all males is between 183.336 mg and 186.66 mg

5 0
3 years ago
HELP PLS THIS IS DUE IN 10 MINUTES
klasskru [66]

Answer:

He could buy 2 brackets

Step-by-step explanation:

42.50- 29= 13.50  and if you buy two that's nine (9.00) + plus tax does not go over budget (shirt included)

3 0
2 years ago
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Which lines can you conclude are parallel given that ? Justify your conclusion with a theorem.
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6k+4k<-4k+6 solve for k
Genrish500 [490]

Answer:

k < 3/7

Step-by-step explanation:

Step 1:Sinplify both sides of the inequality

10k <-4k+6

Step 2: Add 4k to both sides

10k + 4k < -4k + 6 + 4k

14k < 6

Step 3:Divide both sides by 14

14k/14 < 6/14

k <3/7

Note:Provided by Mathpapa an Algebra caculator

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