1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Aleksandr [31]
3 years ago
6

The TI-83/84 Plus calculator can be used to generate random data from a normally distributed population. The command randNorm(10

0,15,50) generates 50 values from a normally distributed population with and . One such generated sample of 50 values has a mean of 98.4 and a SD of 16.3. Assume that is known to be 15. Estimate the mean value from the random number generator using 99% confidence
Mathematics
1 answer:
postnew [5]3 years ago
3 0

Answer:

99% confidence interval for the mean value from the random number generator is a lower limit of 85.87 and an upper limit of 110.93.

Step-by-step explanation:

Confidence interval = mean +/- margin of error (E)

mean = 98.4

sd = 16.3

n = 15

degree of freedom (df) = n - 1 = 15 - 1 = 14

confidence level (C) = 99% = 0.99

significance level = 1 - C = 1 - 0.99 = 0.01 = 1%

t-value corresponding to 14 df and 1% significance level is 2.977.

E = t×sd/√n = 2.977×16.3/√15 = 12.53

Lower limit = mean - E = 98.4 - 12.53 = 85.87

Upper limit = mean + E = 98.4 + 12.53 = 110.93

99% confidence interval for the mean is between 85.87 and 110.93

You might be interested in
One number is eight less than three times another number. If the sum of the numbers is 20, find the numbers.
mamaluj [8]

Answer:

7 & 13

Step-by-step explanation:

Let the first number be x

2nd number = 8 less than 3 times the other

2nd number = 3x - 8

Their sum = 20

X + 3x - 8 = 20

4x -8 = 20

Collect like terms

4x = 20+8

4x = 28

Divide both sides by 4

4x/4 = 28/4

X = 7

First number = 7

2nd number = 3x - 8

= 3(7) - 8

= 21 -8

= 13.

Therefore the numbers are 7 and 13

Pls mark as brainliest

4 0
3 years ago
Gordon types 2,736 words in 36 minutes. Find the unit rate.
STALIN [3.7K]

Answer:

76 words each minute

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
1. Find the value of x in the equation 2N x 20 15 31 X O A. 1 B. 16 OD. 25 ext Review Answer selections
Solnce55 [7]
There a absolute value so mark out the negative and 25 / by 16 is 1 so 1 is your answer if you really do the problem on paper
5 0
3 years ago
Mandy made a graph to show the relationship between the number of Fun-Fair prizes purchased and the total cost of the prizes.Whi
raketka [301]

Answer:

\boxed{C}

5 0
2 years ago
Can someone please help me.
Natasha2012 [34]

Answer:10√2

Step-by-step explanation:

∆ABC is a right angle triangle

Angle A + Angle B + angle C = 180

There angel B = 180-135= 45

Angle A = Angle B

Therefore AC= BC=10

By Pythagoras ppt AB^2=10^2 +10^2

=100+100

=√200

=10√2

3 0
3 years ago
Read 2 more answers
Other questions:
  • If y varies inversely as x, what is k when y=8 and x=4
    12·2 answers
  • What is the average rate of change from x=-1 to x=-2?<br><br> A. 2<br> B.-2<br> C.4<br> D.1
    9·1 answer
  • JK has endpoints J(13,8) and K(-6,-6). Find the coordinates of the midpoint JK
    9·2 answers
  • How to work on this? (x+1) (x+1) (x+1) what the answers will be?
    13·1 answer
  • What is the substitution equation for 7x-2y=35 and x-4y=5
    13·1 answer
  • PLS HELP <br>find the unknown side of the triangle below (round to the nearest tenth) <br>​
    8·1 answer
  • The friendly old woman sold 38 long-
    12·1 answer
  • 80 girls and boys have planned for a movie. They are in a ratio of 6 girls to 2 boys. How many girls are there?
    5·2 answers
  • 7.
    15·2 answers
  • Can someone help me pls
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!