Wow that looks ahrd to solve sorry I can't help
Answer: 10, 1/10, 2/5
Step-by-step explanation:
Answer:
false- its 4/6
Step-by-step explanation:
Mean, m = 18 in
Standard deviation, SD = 2.2 in
Range: 16 ≤ X ≤ 21 in
Calculating Z value,
Z = (X-m)/SD
Then,
Z1 = (16-18)/2.2 ≈ -0.91
Z2 = (21-18)/2.2 ≈ 1.36
From Z table, and at Z1 = -0.91, and Z2 = 1.36;
P(16) = 0.1814
P(21) = 0.9131
Therefore,
P(16≤X≤21) = 0.9131 - 0.1814 = 0.7317
The probability that a child selected randomly measures between 16 and 21 in is 0.7317.
Answer:
see explanation
Step-by-step explanation:
Using the rules of exponents
× 
⇔ 
= 
⇔ 
Thus
= 
× 
= 
×
= 
× 
= 
← as required
