A) Probability is a measure of how likely an event will happen. Here, we calculate the probability of X as:
P(X) = X/N, where X is the successful outcomes, and N is the total outcomes.
P(E) = E/N = 1033/2851 = 0.3623
P(R) = R/N = 854/2851 = 0.2995
P(D) = D/N = 964/2851 = 0.3381
B) Events E and D are mutually exclusive since students accepted early can't be deferred to the regular admission pool, hence, intersection P(E ∩ D) is 0.
C) The count of early accepted students is 1033, and the overall accepted students are 2375.
Thus, the probability is:
P = 1033/2375 = 0.4349
D) Reformulating the question: What’s the probability of being accepted if applying for early admission? Given that 18% of deferred students ultimately got accepted,
0.18 × 964 = 174 was admitted later.
Thus, the probability of being deferred and then accepted becomes:
P(DA) = 174/2831 = 0.0610.
The chance of randomly selecting a student early accepted or deferred then accepted is:
P(E or DA) = 0.0610 + 0.3623 = 0.4233, applying the addition rule.
Answer:
The average for the sampling distribution of the sample proportion is 0.29
The standard deviation for this sampling distribution is 0.01435
Step-by-step explanation:
The mean of the sampling distribution for the sample proportion equals the actual population proportion, which is p = 0.29 in this scenario.
The standard deviation for the sampling distribution of the sample proportion is computed as follows;

Utilizing the provided values;
p = 0.29
1 - p = 0.71
n = 1000
The standard deviation computes to;

Thus, the standard deviation is 0.01435.