Answer:
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Answer:
Solution given:
x^3 - 2x^2 -x+2
take common from two each term
x²(x-2)-1(x-2)
take common again and keep left one on other bracket
<u>(x-2)(x²-1) or (x-1)(x+1)(x-2)</u> is a required answer.
note:using formula a²-b²=(a+b)(a-b) for x²-1.
Answer:
Draw the arrow so that the arrowhead is pointing downwards.
Answer:
= 70.2 ± 3.761 bpm
Step-by-step explanation:
The question is on calculating the confidence interval for a population mean
The general expression is
CI = x ± z * δ/√n where;
CI = confidence interval,
x = mean of sample,
δ = standard deviation,
n= is sample size
z = z* value from standard normal distribution according to confidence level given.
Given that;
n= 30 x =70.2 δ=10.51 z* for 95% CI = 1.96
Then applying the expression
CI = x ± z * δ/√n

Cl = 70.2±3.761
<u>= 70.2 ± 3.761 bpm</u>