2, 5, 0, −1

Paxton Hoffman
2022-07-23
Answered

We have provided simple data sets for you to practice the basics of finding a population mean.

2, 5, 0, −1

2, 5, 0, −1

You can still ask an expert for help

kuglatid4

Answered 2022-07-24
Author has **12** answers

The given data is 2, 5, 0 and –1.

Population mean:

Formula:

$\mu =\frac{\sum x}{N}$

Calculate the population mean is as follows:

$\mu =\frac{2.5+5+0-1}{4}\phantom{\rule{0ex}{0ex}}=\frac{6}{4}\phantom{\rule{0ex}{0ex}}=1.5$

Therefore, the value of population mean is 1.5.

Population mean:

Formula:

$\mu =\frac{\sum x}{N}$

Calculate the population mean is as follows:

$\mu =\frac{2.5+5+0-1}{4}\phantom{\rule{0ex}{0ex}}=\frac{6}{4}\phantom{\rule{0ex}{0ex}}=1.5$

Therefore, the value of population mean is 1.5.

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Learning math The Core Plus Mathematics Project
(CPMP) is an innovative approach to teaching Math-
ematics that engages students in group investigations
and mathematical modeling. After field tests in 36 high
schools over a three-year period, researchers compared
the performances of CPMP students with those taught
using a traditional curriculum. In one test, students had to
solve applied Algebra problems using calculators. Scores
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control group of 273 students in a traditional Math pro-
gram. Computer software was used to create a confidence
interval for the difference in mean scores. (Journal for
Research in Mathematics Education, 31, no. 3[2000])
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Interval: (5.573, 11.427)
a) What’s the margin of error for this confidence
interval?
b) If we had created a 98% CI, would the margin of error
be larger or smaller?c) Explain what the calculated interval means in context.
d) Does this result suggest that students who learn
Mathematics with CPMP will have significantly
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1. Is MBA major independent of the first degree? A random sample of 152 MBA students were surveyed and each person was asked to indicate their MBA major and their first degree. The data that resulted from the survey is summarized below.

Contingency Table | |||||

Degree | |||||

MBA Major | 1 | 2 | 3 | TOTAL | |

1 | 31 | 13 | 16 | 60 | |

2 | 8 | 16 | 7 | 31 | |

3 | 12 | 10 | 17 | 39 | |

4 | 10 | 5 | 7 | 22 | |

TOTAL | 61 | 44 | 47 | 152 | |

chi-squared Stat | 14.70 | ||||

df | 6 | ||||

p-value | 0.0227 | ||||

chi-squared Critical | 12.59 | ||||