CAN SOMEONE PLS HELP

Mathematics

1 answer:

Vladimir [108]2 years ago

5 0

Answer:

2/9

Step-by-step explanation:

Since we are rolling for the numbers under or equal to 4, create the equation, 4/6 and 2/6 as we are also rolling for 2/6 afterwards. Because the chance of rolling for 5 and 6 are not dependent on the first roll, simply multiple 4/6 and 2/6 to get 8/36, which simplifies to 2/9.

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What’s the answer For E

Vika [28.1K]

Answer:

∠E = 146°

Step-by-step explanation:

an isosceles triangle has both two equal sides and two equal angles
the sum of the interior angles of a triangle is 180°
the measure of third angle = the sum of the interior angles - the sum of two angles

E = 180 - (71 + 71) = 146

∠E = 146°

5 0

2 years ago

The standard deviation for actuary salaries has a standard deviation of $36,730 . You collect a simple random sample of n=36 sal

Yanka [14]

Using the z-distribution, it is found that the lower limit of the 95% confidence interval is of $99,002.

<h3>What is a z-distribution confidence interval?</h3>

The confidence interval is:

$\overline{x} \pm z\frac{\sigma}{\sqrt{n}}$

In which:

$\overline{x}$ is the sample mean.

z is the critical value.

n is the sample size.

$\sigma$ is the standard deviation for the population.

In this problem, we have a 95% confidence level, hence $\alpha = 0.95$ , z is the value of Z that has a p-value of $\frac{1+0.95}{2} = 0.975$ , so the critical value is z = 1.96.