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netineya [11]
3 years ago
11

Mary has read 75% of her 200 page book. How many pages has she read?

Mathematics
1 answer:
liq [111]3 years ago
7 0
150 pages :)))))))))
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) In 2005, the Health Department in Marion County, Indiana measured the heights and weights of 90,147 school-age children, allow
Lena [83]

Answer:

Since the calculated z=40  falls in the critical region this indicates that the true obesity rate for children in Marion County is different from the national average at the 0.05 significance level. We reject the null hypothesis that population proportion is 0.17.

Step-by-step explanation:

The national average is 17% .The z proportional hypothesis test is used.

1) Let the null and alternate hypothesis be

H0: p =0.17

against the claim

Ha: p ≠ 0.17

Choose the significance level ∝= 0.05

The critical region is z > 1.96  and Z <- 1.96 because  it is two tailed test.

Computing

z= p^-p / sqrt [pq/n]

Z= 0.22-0.17/ √0.17*(1- 0.17)/90147

z= 39.965

Since the calculated z=40  falls in the critical region this indicates that the true obesity rate for children in Marion County is different from the national average at the 0.05 significance level. We reject the null hypothesis that population proportion is 0.17.

3 0
3 years ago
How many solutions does 7x=-10+8x
iogann1982 [59]

Answer:

one: x=10

hope this helps

4 0
3 years ago
The calling convention should be such that every function is caller-independent. What does that mean
maksim [4K]
Cover job is indecent with the xo batial cap variable,
4 0
3 years ago
Someone help me with this pls
Mumz [18]

Answer:

There will be approx 283908 hits.

Step-by-step explanation:

A website had 342,000 hits in 2011.

This is a decline of 2.3% from the previous year.

Decline rate = 2.3% or 0.023

So, increase rate will be 1-.023=0.977

Time = 2019-2011=8

We can calculate the answer as:

342000\times(0.977)^{8}

= 342000\times0.83014

= 283907.88 rounding to 283908.

Therefore, there will be approx 283908 hits.

4 0
3 years ago
Can you guys help me find the value of x
Tanzania [10]

Answer: x= 54

Step-by-step explanation:mathhhhh

7 0
3 years ago
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