All categories

3 years ago

Z* for 90% confidence is ________. (hint: use z-table c, or software.) answer to three decimal places x.xxx

Mathematics

1 answer:

Aloiza [94]3 years ago

4 0

Answer:

We have to find the z critical value at 100% - 90% = 10% level of significance.

Since the normal distribution has two tails, we therefore, need to divide the significance level into two tails with each tail having area of 5%.

Now using the standard normal table, the z critical is:

$z=\pm1.645$

You might be interested in

A line is drawn on the coordinate plane that passes through the point (3,-6) and has a slope of 4. The y-intercept of the line i

NISA [10]

Answer:

The y-intercept of the line that passes through the point (3, -6) and which has a slope of 4 is -18.

Step-by-step explanation:

We represent the straight line by using this formula from Analytical Geometry:

$y = m\cdot x + b$

Where:

$x$ - Independent variable, dimensionless.

$y$ - Dependent variable, dimensionless.

$m$ - Slope, dimensionless.

$b$ - y-Intercept, dimensionless.

Now we clear the y-intercept:

$b = y - m\cdot x$

If we know that $x = 3$ , $y = -6$ and $m = 4$ , the y-intercept of the line is:

$b = -6 -4\cdot (3)$

$b = -18$

The y-intercept of the line that passes through the point (3, -6) and which has a slope of 4 is -18.

4 0

4 years ago

Solve 2(x + 1) = 2x + 5

IceJOKER [234]

Answer:

no solution

Step-by-step explanation:

Given

2(x + 1) = 2x + 5 ← distribute parenthesis on left side

2x + 1 = 2x + 5 ( subtract 1 from both sides )

2x = 2x + 4 ( subtract 2x from both sides )

0 = 4 ← not possible

This indicates the equation has no solution

3 0

4 years ago

Read 2 more answers

Which value of x means that 3x < 2x + 1

romanna [79]

Answer:

The answer is: x < 1

Step-by-step explanation:

3 0

3 years ago

please help i suck at math lol; what is the slope of the line that passes through the points (-12,-4) and (-16,4)

valina [46]

Answer:

the slope = -2

6 0

3 years ago

Read 2 more answers

Start with the number n = 54527. Divide n by 5 and round the result up to an integer. Keep repeating the division and rounding s

Elza [17]

Without rounding, I make it six. You could do it this way
54527/5^6 comes to a little over 3. That should be close enough. I'm going to check this by doing the divisions. I could let the computer do it, but I'd like to see if there's a pattern. There isn't and the correct answer is

6 <<<< divisions.

5 0

4 years ago