4/5 x55
=4/5*55/1
=(4*55)/(5*1)
=220/5
=44/1
=44
Answer:
a) P(X≥143)=0
b) This contradicts the study as getting a sample with this proportion is almost impossible (if the proportion of 68% is true).
Step-by-step explanation:
If we use the normal approximation to the binomial distribution we have the following parameters (mean and standard deviation):

Then, we can calculate the probability of X being equal or more than 143 using the z-score:

This contradicts the study as getting a sample with this proportion is almost impossible (if the proportion of 68% is true).
Based on the given description above, the answer for this would be the term DEMAND. Demand is defined as the consumers' <span>willingness to pay depends on what income and prices of related goods. Hope this is the answer that you are looking for. Have a great day ahead!</span>
Answer:
not enough information sorry
Step-by-step explanation: