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Alecsey [184]
1 year ago
12

What value of z* should be used to construct a 97 confidence interval of a population mean?

Mathematics
1 answer:
Vaselesa [24]1 year ago
3 0

The value of z* should be used to construct a 97 confidence interval of a population mean is 2.17.

<h3>What is confidence interval?</h3>

A degree of uncertainty and certainty in a sample process is measured by confidence intervals. They can choose from a variety of probability limitations, the most frequent becoming a 95% or 99% confidence level.

Some characteristics of confidence interval are-

  • Statistical tools, such as the t-test, are used to compute confidence intervals.
  • Confidence intervals are used by statisticians to quantify uncertainty in such a sample variable.
  • A researcher, for example, may randomly select multiple samples drawn from the same population and compute a confidence interval for every sample to determine how well it might represent the real value of a population variable.
  • The generated datasets are all unique; some intervals contain the genuine population parameter while others do not.

Now, according to the question;

The confidence level is given 97%.

Thus, the crucial value of z for a 97% confidence interval is 2.17, as determined by a z score table, which is as follows:

P(-2.17 < Z < 2.17)=0.97

Therefore the obtained probability for the z-score of 2.17 is 0.97.

To know more about the confidence interval, here

brainly.com/question/15712887

#SPJ4

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What do i do to find the value of an expression
Veseljchak [2.6K]

Answer:

A variable is a letter, for example x, y or z, that represents an unspecified number.

6+x=12

To evaluate an algebraic expression, you have to substitute a number for each variable and perform the arithmetic operations. In the example above, the variable x is equal to 6 since 6 + 6 = 12.

If we know the value of our variables, we can replace the variables with their values and then evaluate the expression.

Step-by-step explanation:

6z+4x=?

 

Solution: Replace x with 3 and z with 2 to evaluate the expression.

6z+4x=?

6⋅2+4⋅3=?

12+12=24

Hope this helps @(^_^)@

7 0
2 years ago
Lisa wants to buy a computer, this computer costs $400, its on sale for 30% off, if you buy it before 9AM to get an additional 1
STatiana [176]

Answer:

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Step-by-step explanation:

7 0
3 years ago
What is the slope of a line that contains the points (-8,7) and (-4,-5)?
Pani-rosa [81]

Answer:

-3

Step-by-step explanation:

To find the slope given two points

m = (y2-y1)/(x2-x1)

   = (-5-7)/(-4- -8)

  = (-12)/(-4+8)

  =-12/4

  = -3

7 0
2 years ago
This question relates to concepts covered in Lectures 1 &amp; 2. You can use any of the excel files posted to work through the q
liubo4ka [24]

Answer:

mean of this demand distribution = 100

Step-by-step explanation:

To find the mean of this demand distribution;

Mean = Expected vale = E[x]

for discrete provability function,

we say E[x] = ∑(x.p(x))

x     p(x)     x.p(x)

10     0.1     1

30    0.4    12

60    0.4    24

90    0.7    63

∴ ∑(x.p(x)) = ( 1 + 12 + 24 + 63 )

∑(x.p(x)) = 100

7 0
3 years ago
Please help me please answer it correctly
Kruka [31]

Answer:

$1,150

Step-by-step explanation:

<u>Step 1:  Find the total new members</u>

40 - 10

30 new members

<u>Step 2:  Add them to the total</u>

30 + 200

230 total members

<u>Step 3:  Find the money earned</u>

230 * 5

$1,150

Answer:  $1,150

8 0
3 years ago
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