Answer ASAP please! If you can explain your answer it would be the best
2 answers:
Answer:
mean = 85.5
median = 90
mode = 95
range = 35
Step-by-step explanation:
First arrange the data in ascending order:
60 75 75 90 90 95 95 95 95
Mean is the average number found by adding all of the numbers together and dividing by the number of terms in the set.
=85.5
Median is the middle number of the set: (9+1) ÷2 = 5th term.
60 75 75 90 <em>9</em><em>0</em><em> </em>95 95 95 95
therefore the median is 90
The mode is the number that is repeated more often than any other, so 95 is the mode.
The range = the largest value - the smallest value
= L-S = 95-50
= 35
Therefore the range is 35.
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Answer:
Probability that a randomly selected woman's gestation period will be between 261 and 279 days is 0.68.
Step-by-step explanation:
We are given that the average human gestation period is 270 days with a standard deviation of 9 days. The period is normally distributed.
Firstly, Let X = women's gestation period
The z score probability distribution for is given by;
Z = ~ N(0,1)
where, = average gestation period = 270 days
= standard deviation = 9 days
Probability that a randomly selected woman's gestation period will be between 261 and 279 days is given by = P(261 < X < 279) = P(X < 279) - P(X 261)
P(X < 279) = P( <
) = P(Z < 1) = 0.84134
P(X 261) = P(
) = P(Z
-1) = 1 - P(Z < 1)
= 1 - 0.84134 = 0.15866
<em>Therefore, P(261 < X < 279) = 0.84134 - 0.15866 = 0.68</em>
Hence, probability that a randomly selected woman's gestation period will be between 261 and 279 days is 0.68.