Math

1)Find the standard deviation of the data set to the nearest tenth. (21,13,18,16,13,35,12,8,15)

A)16.8
B)7.8
C)7.3
D)5.7
I chose C

mean = 21+13+18+16+13+35+12+8+15/9
16.8

variance = (21-16.8)^2 = 17.64...did that with the rest and added them to get sqrt 53.7

standard deviation = sqrt 53.7
= 7.3

2)Find the exact value of sin165
A)(sqrt6) - (sqrt2)/4
B)(sqrt6) + (sqrt2)/4
C)(sqrt2) - (sqrt6)/4
D)(sqrt of sqrt6 - sqrt2)/4
I chose A

(in D, there is a sqrt over both the sqrt6 and sqrt2)

3)Use the Binomial Theorem to find the sixth term in the expansion of (m+2p)^7.

A)21m^2p^5
B)672m^2p^5
C)32m^2p^5
D)448mp^6
I chose A

7/(7-k)!k!^m7-kpk
7/(7-5)!5!^m7-5p5
7*6*5*4*3/5*4*3*2*1^m2p5
2520/120
21m^2p^5

  1. 👍 0
  2. 👎 0
  3. 👁 62
asked by Jon
  1. Discard this post

    1. 👍 0
    2. 👎 0
    posted by Jon

Respond to this Question

First Name

Your Response

Similar Questions

  1. Albebra II

    Find the standard deviation of the data set to the nearest tenth: (21, 13, 18, 16, 13, 35, 12, 8, 15) Answer: 16.8 thanks

    asked by Lucy on April 6, 2008
  2. Algebra

    Use a calculator to find the mean and standard deviation of the data. Round to the nearest tenth. 6,7,19,7,18,7 A. mean = 9; standard deviation = 26.4 B. mean = 11.9; standard deviation = 26.4 C. mean = 10.6; standard deviation =

    asked by Veronika on February 18, 2016
  3. Math

    What is the standard deviation of the following data set rounded to the nearest tenth? 51.8, 53.6, 54.7, 51.9, 49.3 A) 1.9*** B) 3.3 C) 1.8 D) 3.4

    asked by M, S, E, on May 5, 2017
  4. Algebra II

    What is the standard deviation of the data set? Round the answer to the nearest tenth. 5, 9, 11, 4, 8, 9, 12

    asked by Bob on September 7, 2016
  5. Algebra 2

    Please show your work to find the mean and standard deviation of the data. Round to the nearest tenth. 20, 16, 18, 14, 9, 20, 16 I know i have to add all them and divide the answer by 7. And that's my mean , But Idk how to get the

    asked by Ciaria on March 31, 2015
  6. Algebra 2

    The test scores for a math class are shown below. 81,84,82,93,81,85,95,89,86,94 What is the standard deviation of the data set? Roun your answer to the nearest tenth 4.9 5.5 5.3 5.1

    asked by Whitney on May 19, 2014
  7. Algebra

    Find the mean and standard deviation of the data set. If necessary, round to the nearest hundredth. 4, 8, 5, 12, 3, 9, 5, 2 Mean is 6 and standard deviation is about 13.33?

    asked by Anonymous on May 20, 2014
  8. statistics

    I.use the chebyshev's theorem to find out what percentage of the values will fall between 201 and 257 for a data set with a mean of 229 and standard deviation of 14. II. use the emperical rule to find out two values 68% of the

    asked by mary on October 11, 2010
  9. Math

    I. Use Chebyshev’s theorem to find what percent of the values will fall between 156 and 276 for a data set with a mean of 216 and standard deviation of 12. II. Use the Empirical Rule to find what two values 68% of the data will

    asked by Tameka on January 21, 2011
  10. Math-Statistics

    I. Use Chebyshev’s theorem to find what percent of the values will fall between 156 and 276 for a data set with a mean of 216 and standard deviation of 12. II. Use the Empirical Rule to find what two values 68% of the data will

    asked by Tameka on January 20, 2011
  11. Math-confused...plz help

    I. Use Chebyshev’s theorem to find what percent of the values will fall between 183 and 227 for a data set with a mean of 205 and standard deviation of 11. II. Use the Empirical Rule to find what two values 99.7% of the data

    asked by Jennifer on October 16, 2011

More Similar Questions