Jill has 2 black, 4 blue, 1 yellow, 2 orange, and 3 purple crayons in a bag. Without looking she pulls out a crayon. What is the
1 answer:
Answer:
1/6
Step-by-step explanation:
Number of orange crayons = 2
Total number of crayons = 2 + 4 + 1 + 2 + 3 = 12
Probability is calculated as:
Here the favorable or desired outcome is picking up an orange crayon. So number of favorable outcomes will be 2 as 2 orange crayons are available.
Total number of outcomes is 12 which is the sum of all the crayons available.
So, the probability the crayon she pulls out will be orange =
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Answer: 68
Step-by-step explanation:
Formula for sample size when prior estimate of population proportion (p) is available:
, where z*= critical-value.
E= Margin of error.
Let p be the population proportion of trees are infected with the citrus red mite.
As per given , we have
E= ± 0.08
The critical z-value corresponding to 90% confidence level = z*=1.645
Substitute all the values in the above formula , we get
Required sample size :
[Rounded to next integer.]
Thus, the minimum sample size should be taken =68
add 38 on both sides, solve for -44 + 38 which is -6.
__________
, is your final answer.
hope this helps :)