Mathematics, 20.02.2020 23:02 tinyiaihfurlow
It is known that in 2013 the population mean for the writing section of the SAT is 488, with a standard deviation of 114. A sample of 100 students taking the SAT whose family income was less than $20,000 had a verbal score of 429. a. Perform a two-tailed hypothesis test to determine whether the group whose family income was less than $20,000 had a significantly different score on average than the population. State the test statistic and your decision. (3pts) b. Assume that rather than a sample of 100, the sample size was only 10. Perform the same hypothesis test again with this new sample size. State the test statistic and your decision. (2pts)
Answers: 3
Mathematics, 21.06.2019 14:40
3× __ -2=15 7 2× __+1=7 5 7× =22 15 5× __+10=2 8 × __+4=20 6 × =10 3 × __+2=8 6 × __+8=8 9 × __+7=20 6
Answers: 3
Mathematics, 21.06.2019 18:00
Galen sold tickets of his church’s carnival for a total of $2,820. children’s tickets cost $3 each and adult tickets cost $5 each. the number of children’s tickets sold was 30 more than 3 times the number of adult tickets slod. how many children’s ticket and how many adult tickets did he sell?
Answers: 2
Mathematics, 21.06.2019 19:00
[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?
Answers: 1
Mathematics, 21.06.2019 21:10
Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x
Answers: 2
It is known that in 2013 the population mean for the writing section of the SAT is 488, with a stand...
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