Step-by-step explanation:
=0.25x-12 I hope this helped:)
At a school number of boys :number of girls11:9 there are 124more boys than girls.work out the total number of students at the s
1 answer:
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Answer:
The appropriate hypotheses for performing a significance test is:
Step-by-step explanation:
Last year, the mean score on the state’s math test was 51. The administrators have trained the teachers in a new method of teaching math hoping to raise the scores on this standardized test this year.
At the null hypothesis, we test if the mean score this year is the same as last year, that is:
At the alternate hypothesis, we test if the mean score improved this year from last, that is:
The appropriate hypotheses for performing a significance test is: