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3 years ago

This applet illustrates 95% confidence intervals for samples from a normal distribution with known variance.

Mathematics

1 answer:

deff fn [24]3 years ago

6 0

Answer:

1- b. False

2 b. We are 95% confident that the true mean is between 76.08 and 83.92.

Step-by-step explanation:

Confidence Interval is the estimated value that is computed from the statistic of data which is observed. The range value is plausible for unknown parameters. To find the critical value the confidence interval value is observed through the t-value table.

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Please help me with this

Troyanec [42]

Answer:

$y= \frac{1}{2} +5$

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3 years ago

Use the graph to solve the problem.

Nutka1998 [239]

Answer:

(3,6)

Step-by-step explanation:

From 6 in the x-axis go up 3 units, and from 3 on the y-axis go left 6 units.

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3 years ago

Which statement describes the effect on the parabola y = x2 - 1 when it is changed to y = x2 +6?

zlopas [31]

Initial:

$y=x^2-1$

Changed to:

$y=x^2+6$

As you can see the change is: from -1 to +6.

In a equation as follow:

$y=x^2+k$

The k is a transformation that moves up or down the graph of the function. If k is changed to a less value the graph moves down, If k is changed to a greather number the graph moves up.

In this case the graph moves up

To find the number of units the graph moves find the difference betwwen values of k:

$6-(-1)=7$

Then, the parabola y=x²-1 is moved 7 units up when it is changed to y=x²+6

4 0

1 year ago

Which is a simplified form of the expression -4(n + 1) – (n + 2)?

Nadya [2.5K]

Answer:

-(5 n + 6)

Step-by-step explanation:

Simplify the following:

-4 (n + 1) - (n + 2)

-4 (n + 1) = -4 n - 4:

-4 n - 4 - (n + 2)

-(n + 2) = -n - 2:

-4 - 4 n + -n - 2

Grouping like terms, -4 - 4 n - 2 - n = (-4 n - n) + (-4 - 2):

(-4 n - n) + (-4 - 2)

-4 n - n = -5 n:

-5 n + (-4 - 2)

-4 - 2 = -(4 + 2):

-5 n + -(4 + 2)

4 + 2 = 6:

-5 n - 6

Factor -1 out of -5 n - 6:

Answer: -(5 n + 6)

4 0

3 years ago

Read 2 more answers

A man is in a boat that is floating 175 feet from the base of a 200-foot cliff. What is the angle of depression between the clif

Rus_ich [418]

BStep-by-step explanation:

is a good number

4 0

4 years ago