3 years ago

Anyone help me? Solve this problem

Mathematics

1 answer:

strojnjashka [21]3 years ago

7 0

the answer is in the picture I mentioned as the answer ok ◉‿◉◉‿◉◉‿◉◉‿◉◉‿◉◉‿◉◉‿◉◉‿◉◉‿◉◉‿◉◉‿◉◉‿◉◉‿◉◉‿◉◉‿◉◉‿◉◉‿◉◉‿◉

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For a sample of 35 items from a population for which the standard deviation is 20.5, the sample mean is 458. At the 0.05 level o

Anika [276]

Answer:

Value of test statistics = 2.30

Step-by-step explanation:

We are given that for a sample of 35 items from a population for which the standard deviation is 20.5, the sample mean is 458.

Also, Null Hypothesis, $H_0$ : $\mu$ = 450

Alternate Hypothesis, $H_1$ : $\mu\neq$ 450

The test statistics that will be used here is One sample t-test statistics;

T.S. = $\frac{\bar X-\mu}{\frac{s}{\sqrt{n} } }$ ~ $t_n_-_1$

where, $\bar X$ = sample mean = 458

s = sample standard deviation = 20.5

n = sample of items = 35

So, test statistics = $\frac{458-450}{\frac{20.5}{\sqrt{35} } }$ ~ $t_3_4$

= 2.30

Therefore, the value of test statistics is 2.30 .

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3 years ago

A recipe calls for 3/4 lb of cream cheese. A small tub of cream cheese at the grocery store weighs 12oz. Is this enough cream ch

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4 years ago

Anyone help me? Solve this problem ​

Anyone help me? Solve this problem