Mathematics, 09.12.2019 23:31 hdjsjfjruejchhehd
In a study of performance ratings of ex-smokers, a random sample of 34 ex-smokers had a mean rating of 2.21 and a sample sd of 2.21.
for an independent random sample of 86 long-term ex-smokers, the mean rating was 1.47 and the sd was 1.69.
find the lowest level of significance at which the hypothesis of equality of the two population means can be rejected against a two-sided alternative.
Answers: 3
Mathematics, 21.06.2019 17:00
You are a clerk at convenience store. a customer owes 11.69 for a bag of potatoes chips. she gives you a five dollar bill. how much change should the customer receive?
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Mathematics, 21.06.2019 17:00
Solve with work both bert and ernie received an increase in their weekly salaries. bert's salary increased from $520 to $520. ernie's salary went from $580 to $645. find the percent of increase for each salary. what was the larger of the two percents ?
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Mathematics, 21.06.2019 18:10
Find the value of p for which the polynomial 3x^3 -x^2 + px +1 is exactly divisible by x-1, hence factorise the polynomial
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Mathematics, 21.06.2019 20:00
Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.
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In a study of performance ratings of ex-smokers, a random sample of 34 ex-smokers had a mean rating...
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