Answer:
Test is Left tailed test
Parameter tested is standard deviation
Step-by-step explanation:
We are given the hypothesis as;
Null hypothesis; H0: σ = 8.6
Alternative hypothesis; H1: σ < 8.6
Where;σ is a constant generally known in statistics as the standard deviation.
Now, it's the alternative hypothesis that will let us know whether this is left tailed, right tailed or two tailed.
Alternative hypothesis says σ < 8.6.
This means that the values of σ that satisfy this hypothesis are less than 8.6 and thus are on the left hand side of 8.6 on a number line. Thus, the shaded region in a normal distribution curve will be on the left.
Thus, it's a left tailed test
Answer:
8+18+20x16 ,
Step-by-step explanation: yeah .
Answer:
42 and 21 are composite numbers
Answer:
Option D $26,792
Step-by-step explanation:
When producing 427 printers, the cost of production is 427*$48.28=$20,615.56
When selling each printer, profit per printer is $163.95 - $48.28= $115.67
Total money after selling the 427 printers is 427*$163.95 =$70006.65
Subtracting cost of production from value of sales we deduce
$70006.65-$20,615.56=$49391.09
Non-profit overhead expenses will be the difference between the expected profit and the actual profit earned
$49391.09
-$22,599.09.=$26,792
Therefore, option D, $26,792 is the right choice
