elijaahstepp041
05.05.2020 •
Mathematics
Find the 90% confidence interval for the population standard deviation given the following.
n = 51, x = 11.49, s = 2.34 and the distribution is normal.
a. 1.92 < σ < 3.25
b. 2.01 < σ < 2.81
c. 1.37 < σ < 1.91
d. 10.28 < σ < 14.32
Solved
Show answers
More tips
- D Dating, Love, Relationships Why do we feel shame?...
- S Style and Beauty How to Properly Apply Eye Makeup: Tips from a Professional Makeup Artist...
- A Animals and plants How ants survive winter: exploring the secrets of their winter life...
- F Food and Cooking Discover How to Properly Prepare Dough for Rasstegai...
- P Philosophy Unidentified Flying Object - What is the Nature of this Phenomenon?...
- F Family and Home Protect Your Home or Apartment from Pesky Ants...
- O Other What is a Disk Emulsifier and How Does it Work?...
- F Family and Home What does a newborn need?...
- F Family and Home Choosing the Right Car Seat for Your Child: Tips and Recommendations...
- F Food and Cooking How to Get Reconfirmation of Registration?...
Answers on questions: Mathematics
- M Mathematics A geometric sequence has 20 terms, with the first four terms given below. 279, 186, 124, ... (a) Find r, the common ratio of the sequence. Give your answer as a fraction. [1]...
- M Mathematics Given h(x) = 4x2 + 3x – 8, what is the value of h(–9) ?...
- M Mathematics What line is perpendicular to the line y= -3x+2 and passes through the point -2,8...
- M Mathematics Help Me Will give brainliest answer...
- M Mathematics Carol earns $16.00 for 1/2 of an hour. Peter earns $15.00 for 1/3 of an hour. How much do Carol and Peter earn for 3 hours of work?...
- M Mathematics 2 questions- Please help...
- M Mathematics Anyone else feels like this what boys need from a girl so they could date them to be attracted to them and be nice and girls be like i need guys who play basketball, nice, funny...
- M Mathematics PARTA Acar travels 30 miles in of an hour. What is the average speed, in miles per hour, of the car? 1 2 5 3 Enter your answer in the box below. miles per hour 1 2 3 71 4 5 6...
- M Mathematics I WILL GIVE BRAINLIST Zaire keeps track of the number of frisbee golf holes on which he makes par or better. The table shows the number of holes Zaire has played during his round...
- M Mathematics Can anyone answer why my friend send me the 100 million nitro type gold Membership yesterday and in his email it says it deliverd but i did not get it do you know why this is...
Ответ:
b. 2.01 < σ < 2.81
Step-by-step explanation:
The 90% confidence interval for the population standard deviation is calculated as:
< σ <
Where n is equal to 51, s is equal to 2.34, is 10%, is the value for the Chi squared distribution with n-1 degrees of freedom that has a probability of in the right tail and is the value for the Chi squared distribution with n-1 degrees of freedom that has a probability of in the right tail.
So, replacing n by 51, s by 2.34, by 67.50 and by 34.76, we get that the The 90% confidence interval is equal to:
< σ <
2.01 < σ < 2.81
Ответ: