Mathematics, 25.07.2020 03:01 glocurlsprinces
A teacher wants to compare scores on a geology exam for two classes. The difference between the sample means is 21.4. If the standard deviation of the distribution of the difference between sample means is 16.66, and she is testing the hypothesis at the 68% confidence level, which statement is true? a)The difference between the two means is significant, so the null hypothesis must be accepted. b)The difference between the two means is not significant, so the alternative hypothesis must be rejected. c)The difference between the two means is not significant, so the null hypothesis must be rejected. d)The difference between the two means is not significant, so the alternative hypothesis must be accepted. e)The difference between the two means is significant, so the alternative hypothesis must be accepted.
Answers: 1
Mathematics, 21.06.2019 16:30
Cassie is traveling 675 miles today to visit her brother and his family. so far, she has stopped for gas three times. at the first stop, she put in 7.1 gallons of gas and paid $23.79. at her second stop, she put in 5.8 gallons of gas and paid $19.08. and, at the third stop, 6.6 gallons and paid $20.39. at which stop did casey pay the most for gas?
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Mathematics, 21.06.2019 17:00
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Given f(x)= 9x+1 and g(x)=x^3, choose the expression (f*g)(x)
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Mathematics, 21.06.2019 18:10
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A teacher wants to compare scores on a geology exam for two classes. The difference between the samp...
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