54 is 60% of what number?

Mathematics

2 answers:

myrzilka [38]4 years ago

8 0

54 is 60%
SO 100% = 54 * 100/60 = 90

So the number is 90

Genrish500 [490]4 years ago

6 0

Let, the number = x

Then, x * 60% = 54

x * 0.60 = 54

x = 54 / 0.60

x = 90

In short, Your Answer would be: 90

Hope this helps!

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When we compare the significance level $\alpha=0.1$ we see that $p_v$ so we can reject the null hypothesis at 10% of significance. So the the true mean is difference from 21 at this significance level.

Step-by-step explanation:

Data given and notation

$\bar X=23$ represent the sample mean

$\sigma=3.5$ represent the population standard deviation

$n=49$ sample size

$\mu_o =21$ represent the value that we want to test

$\alpha=0.1$ represent the significance level for the hypothesis test.

z would represent the statistic (variable of interest)

$p_v$ represent the p value for the test (variable of interest)

State the null and alternative hypotheses.

We need to conduct a hypothesis in order to check if the average age of the evening students is significantly different from 21, the system of hypothesis would be:

Null hypothesis: $\mu = 21$