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Nataliya [291]
3 years ago
12

SOMEONE ANSWER THIS PLSSSS

Mathematics
1 answer:
Anestetic [448]3 years ago
5 0

Answer:

here's the answer to your question

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According to a report released by CIBC entitled "Women Entrepreneurs: Leading the Charge," the average age for Canadian business
SOVA2 [1]

Answer:

We conclude that the mean age of Canadian businesswomen has increased.

Step-by-step explanation:

We are given that according to a report released by CIBC entitled "Women Entrepreneurs: Leading the Charge," the average age for Canadian businesswomen in 2008 was 41.

The researchers randomly sample 97 Canadian businesswomen and ascertain that the sample mean age is 43.4. From past experience, it is known that the population standard deviation is 8.95.

Let \mu = <u><em>mean age of Canadian businesswomen.</em></u>

So, Null Hypothesis, H_0 : \mu \leq 41      {means that the mean age of Canadian businesswomen has decreased or remained same}

Alternate Hypothesis, H_A : \mu > 41     {means that the mean age of Canadian businesswomen has increased}

The test statistics that would be used here <u>One-sample z-test statistics</u> because we know about population standard deviation;

                               T.S. =  \frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } }  ~ N(0,1)

where, \bar X = sample mean age of Canadian businesswomen = 43.4

             \sigma = population standard deviation = 8.95

             n = sample of Canadian businesswomen = 97

So, <u>the test statistics</u>  =  \frac{43.4-41}{\frac{8.95}{\sqrt{97} } }

                                     =  2.64

The value of z test statistic is 2.64.

<u>Also, P-value of the test statistics is given by;</u>

             P-value = P(Z > 2.64) = 1 - P(Z < 2.64)

                           = 1 - 0.99585 = <u>0.00415</u>

Now, at 1% significance level the z table gives critical value of 2.33 for right-tailed test.

Since our test statistic is more than the critical value of z as 2.64 > 2.33, so we have sufficient evidence to reject our null hypothesis as it will fall in the rejection region due to which <em><u>we reject our null hypothesis</u></em>.

Therefore, we conclude that the mean age of Canadian businesswomen has increased.

4 0
3 years ago
The expression (x⁴)(x-12) is equivelent to x^n. what is the value to n?
Kobotan [32]
I attached the work/steps for my answer.

5 0
2 years ago
HELP ASAP! BRAINLIEST!
sammy [17]

26+12+7(2)= 38+14=52

8 0
3 years ago
Read 2 more answers
The sum of twice a number and three
san4es73 [151]

Answer:

i dont get what youre asking

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
The Paks bought 4 lunches for $16. The McGills bought 6 lunches for $24. The Manns bought 15 lunches for $60. The relationship o
sveta [45]

Answer:

$4

Step-by-step explanation:

The equation for direct proportionality =

y = bx

where y = dependent variable

b = constant

x = independent variable

There is positive proportionality is two variables are positively related to each other.

In this question, price of lunches is the dependent variable while number of lunches is the independent variable

$16 = b4

Divide both sides by 4 to find b

b = $4

6 0
3 years ago
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