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Tems11 [23]
3 years ago
14

A university dean is interested in determining the proportion of students who receive some sort of financial aid. Rather than ex

amine the records for all students, the dean randomly selects 200 students and finds that 118 of them are receiving financial aid. If the dean wanted to estimate the proportion of all students receiving financial aid to within 3% with 99% reliability, how many students would need to be sampled?
Mathematics
1 answer:
quester [9]3 years ago
4 0

Answer:1866

Step-by-step explanation:

Given

n=200

x=118

Population proportion P=\frac{118}{200}=0.59

\alpha=0.005

Realiability =99%

Z_{\frac{\alpha }{2}}=2.576

Margin of erroe is given by \sqrt{\frac{p\left ( 1-p \right )}{N}}

0.03= \sqrt{\frac{0.59\left ( 1-0.59 \right )}{N}}

85.667=\sqrt{\frac{N}{0.6519}}[tex]N=1865.88[tex]\approx 1866 Students

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Which statement is true?
Lisa [10]

Option B is the answer

Step-by-step explanation:

Assuming it is a geometric series

A geometric series will converge if -1< r < 1 written as |r| < 1 .That is if the common ratio is between -1 and 1 like 1/2...For example : 1/2 + 1/4 + 1/8 + ...

if the common ratio, r is greater than 1 or less than -1, the terms of the series become larger and larger in magnitude. The sum of the terms also gets larger and larger, and the series has no sum. The series diverges. For example : 4+ 40+ 400+ 4000 +... The common ration here is 10 and the series diverges. That implies that option C and D are out

For example :

If is r is equal to 1 , that is |r|=1 , all of the terms of the series are the same. For example , 2+2+2+2+... The series diverges.

And the first term doesn't affect the convergence of the series..that implies that option A is out

A series converges if and only if the absolute value of the common ratio is less than one: |r|<1

5 0
4 years ago
Judi and Amazing shared 20 in the ratio 2 ratio 3 how many oranges has Amazing<br>​
AveGali [126]

Answer:

12 oranges

Step-by-step explanation:

Judi : Amazing

2 : 3

Total oranges shared = 20

- 5 units = 20

1 unit = 20 ÷ 5 = 4 oranges

Therefore,

Number of oranges Amazing have = 4 × 3 = 12 oranges

4 0
3 years ago
Read 2 more answers
The number of ferryboat trips r(c) needed to transport c cars in 1 day can be found using the function f(c)=c/20. If there are n
xz_007 [3.2K]
<h2>Hello!</h2>

The answer is:

The range of the given function, f(c) is

f(c)\leq 250

<h2>Why?</h2>

To solve the problem we need to remember that a function is a relationship between an input usually called "x" (domain) and an output, usually called "y" and it's also the range of the function.

f(x)=y

We are given a relationship (a function) between the ferryboat trips "c" and the number of cars transported per day.

f(c)=\frac{c}{20}

Also, we know that there are not more than 5000 cars transported by the ferryboat, so, let's make this value our input, in order to find the output (range) of the given function.

So, if

c=5000

Evaluating, we have:

f(5000)=\frac{5000}{20}=250

Hence, the range of the function knowing that there are not more than 5000 cars transported by the ferryboat (daily) the range is all the numbers that are less or equal to 250.

f(c)\leq 250

Have a nice day!

8 0
3 years ago
Guys? can ypu pls help me with this? it's our exam day, thank you very much​
topjm [15]

Answer:

Step-by-step explanation:

7 0
2 years ago
A tire manufacturer has a 60,000 mile warranty for tread life. The manufacturer considers the overall tire quality to be accepta
Dominik [7]

Answer:

Fail to reject H₀

Step-by-step explanation:

To reject the null hypothesis, the P-value must be less than 0.05.

Since the P-value is 0.15 which is greater than 0.05, we would fail to reject the null hypothesis as there is no sufficient evidence against the null hypothesis.

Thus, the conclusion would be to fail to reject H₀.

7 0
3 years ago
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