19 or 72 cause u could do it either way
Answer:
Step-by-step explanation:
Given the following :
Mean ( m) = 2.98
Standard deviation (sd) = 0.05
A) proportion of cases with mean less than 3.014 inches
X = 3.014
Zscore = (x - m) / sd
Zscore = (3.014 - 2.98) / 0.05
= 0.034 / 0.05
= 0.68
P(Z < 0.68) ; from z table = 0.7517
B.)
25th percentile (0.25) = Q1; corresponds to a Zscore of about - 0.675
Zscore = (x - m) / sd
-0.675 = (X - 2.98) / 0.05
-0.675 * 0.05 = X - 2.98
-0.03375 = X - 2.98
X = 2.946 = 2.95
C)
Q3 = 0.75
75th percentile (0.75) ; corresponds to a Zscore of about 0.675
Zscore = (x - m) / sd
0.675 = (X - 2.98) / 0.05
0.675 * 0.05 = X - 2.98
0.03375 = X - 2.98
0.03375 + 2.98 = X
X = 3.01
IQR = Q3 - Q1
IQR = 3.01 - 2.95 = 0.06
Lower outlier :
Q1 - 1.5(IQR) = 2.95 - 1.5(0.06) = 2.86
UPPER OUTLIER:
Q3 + 1.5(IQR) = 3.01 + 1.5(0.06) = 3.10
Proportion less than 2.86:
Z = (2.86 - 2.98) / 0.05
= - 0.12 / 0.05
= - 2.4
P(Z < 2.4) = 0.0082
Proportion < 3.10
Z = (3.1 - 2.98) / 0.05
= 0.12 / 0.05
= 2.4
P(Z > 2. 4) = 1 - P(Z < 2.4) = (1 - 0.9918) = 0.0082
Proportion of
Probability is simply how likely something is to happen.
Whenever we’re unsure about the outcome of an event, we can talk about the probabilities of certain outcomes—how likely they are. The analysis of events governed by probability is called statistics.
The best example for understanding probability is flipping a coin:
There are two possible outcomes—heads or tails.
What’s the probability of the coin landing on Heads? We can find out using the equation P(H) = ?P(H)=?P, left parenthesis, H, right parenthesis, equals, question mark.You might intuitively know that the likelihood is half/half, or 50%.
Tips
The probability of an event can only be between 0 and 1 and can also be written as a percentage.
Answer:
text me the answer when you get it 832-757-5456
Step-by-step explanation:
927.15 would be your answer