2 years ago

What is the value of the expression 8 1/2-2+43/4 Please hurry

1 answer:

3 0

Answer:

$8\frac{1}{2}-2+\frac{43}{4}=\\ \\=\frac{17}{2}-\frac{8}{4}+\frac{43}{4}\\ \\=\frac{34}{4}-\frac{8}{4}+\frac{43}{4}\\\\=\frac{69}{4}\\ \\\ =17\frac{1}{4}$

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stellarik [79]

Let $x$ be the number of students who eat cauliflower.

Therefore, $x=4$ .

Let $n$ be the total number of students surveyed.

Therefore, $n=39$

Thus, $\hat p$ $=\frac{4}{39} =0.10256$

Now, for 90% confidence level, from the table we know that $Z=1.645$ .

The formula for the interval range of proportion of students is :

$p= \hat p\pm Z\sqrt{\frac{\hat p(1-\hat p)}{n}}$

Plugging in the values we get:

$p=0.10256\pm 1.645\sqrt{\frac{0.10256(1-0.10256)}{39}}=0.10256\pm 0.04858=0.15114, 0.05398$

Thus, Jane is 90% confident that the population proportion p, for students who eat cauliflower in her campus is between 5.398% and 15.114% (after converting the answer we got to percentage).

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3 years ago

Solve and show your work for each question. What is 0.(24) ̅ ̅ expressed as a fraction in simplest form? What is 0.24 ̅ expresse

Elden [556K]

The answer to this question is 24/99. 0.24 with 24 repeating in fractional form is 24/99. You put a 9 in the denominator for every repeating digit.

8 0

2 years ago

What percentage is the fraction 2/(10) equal to?

umka2103 [35]

Answer:

B: 20%

Step-by-step explanation: