Mathematics, 23.08.2019 11:30 ericahale3971
The resting heart rates for 80 women aged 46β55 in a simple random sample are normally distributed, with a mean of 71 beats per minute and a standard deviation of 6 beats per minute. assuming a 90% confidence level, what is the margin of error for the population mean?
0.66
1.10
1.31
1.73
Answers: 1
Mathematics, 21.06.2019 19:00
In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class
Answers: 1
Mathematics, 21.06.2019 22:00
(01.04 lc)multiply 1 over 6 multiplied by negative 1 over 2. negative 1 over 3 negative 1 over 12 1 over 12 1 over 3
Answers: 1
Mathematics, 22.06.2019 01:10
Evaluate 8x2 + 9x β 1 2x3 + 3x2 β 2x dx. solution since the degree of the numerator is less than the degree of the denominator, we don't need to divide. we factor the denominator as 2x3 + 3x2 β 2x = x(2x2 + 3x β 2) = x(2x β 1)(x + 2). since the denominator has three distinct linear factors, the partial fraction decomposition of the integrand has the formβ 8x2 + 9x β 1 x(2x β 1)(x + 2) = correct: your answer is correct. to determine the values of a, b, and c, we multiply both sides of this equation by the product of the denominators, x(2x β 1)(x + 2), obtaining 8x2 + 9x β 1 = a correct: your answer is correct. (x + 2) + bx(x + 2) + cx(2x β 1).
Answers: 3
The resting heart rates for 80 women aged 46β55 in a simple random sample are normally distributed,...
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