If you would graph this function f(x) =2x-1. Would it be linear or non linear
2 answers:
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Answer:
The value of t test statistics is -2.25.
Step-by-step explanation:
We are given that a manufacturer of banana chips would like to know whether its bag filling machine works correctly at the 402 gram setting. It is believed that the machine is under filling the bags.
A 25 bag sample had a mean of 393 grams with a standard deviation of 20.
<u><em>Let </em></u><u><em> = mean filling of bags by the machine.</em></u>
So, Null Hypothesis, :
402 gram {means that the the machine is not under filling the bags}
Alternate Hypothesis, :
< 402 gram {means that the the machine is under filling the bags}
The test statistics that would be used here <u>One-sample t test statistics</u> as we don't know about the population standard deviation;
T.S. = ~
where, = sample mean bag filling = 393 grams
s = sample standard deviation = 20 grams
n = sample of bags = 25
So, <u><em>test statistics</em></u> = ~
= -2.25
The value of t test statistics is -2.25.
Answer:
<em>Sherita would need to make 10 free throws</em>
Step-by-step explanation:
<u>Proportions</u>
Sherita made 46 of her first 60 free throws in this basketball season. Calculating the average we get:
Sherita wants to have a free throw average of at least 80% in her next x free throws. This means she will have 46+x made throws out of 60+x total throws. For this new performance, the new average would be:
And we equate it to 80% (0.8 in decimal):
Multiplying by 60+x:
Operating:
Subtracting 46 and 0.8x:
0.2x=2
Dividing by 0.2
x = 10
Sherita would need to make 10 free throws