Find the slope of the line that passes through the points (-5,-6) and (5,10)
1 answer:
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Answer:
Interquartile Range= 0.079.
Step-by-step explanation:
Given,
The batting averages for seven baseball players are
0.176, 0.235, 0.272, 0.158, 0.201, 0.255, 0.303
First we have arrange the data in descending order or ascending order.
The ascending order of the data is
0.158, 0.176, 0.201, 0.235, 0.255, 0.272, 0.303
Median: The middle term of the data is the median of the data.
Here
Median = 0.235
First quartile: The median of the lower half of data.
The lower half of the data is 0.158, 0.176, 0.201
Third quartile: The median of the upper half of data.
The upper half of the data is 0.201, 0.255, 0.303
Interquartile: The difference between first quartile and third quartile.
Interquartile Range =
=(0.255- 0.176)
=0.079
Answer:
P(2.50 < Xbar < 2.66) = 0.046
Step-by-step explanation:
We are given that Population Mean, = 2.58 and Standard deviation,
= 0.75
Also, a random sample (n) of 110 households is taken.
Let Xbar = sample mean household size
The z score probability distribution for sample mean is give by;
Z = ~ N(0,1)
So, probability that the sample mean household size is between 2.50 and 2.66 people = P(2.50 < Xbar < 2.66)
P(2.50 < Xbar < 2.66) = P(Xbar < 2.66) - P(Xbar 2.50)
P(Xbar < 2.66) = P( <
) = P(Z < -1.68) = 1 - P(Z 1.68)
= 1 - 0.95352 = 0.04648
P(Xbar 2.50) = P(
) = P(Z
-3.92) = 1 - P(Z < 3.92)
= 1 - 0.99996 = 0.00004
Therefore, P(2.50 < Xbar < 2.66) = 0.04648 - 0.00004 = 0.046