The probability of a snowstorm on thanksgiving is .20 and the probability of a snowstrom on christmas is .90. Assuming that these two events are independent, what is the probability of a snowstorm on either thanksgiving on christmas?
Ans
P(snowstorm on either thanksgiving on Christmas) = 1- P(nither) = 1 - (0.8*0.1) = 0.92
The probability of a snowstorm on thanksgiving is .20 and the probability of a snowstrom on...
Do shoppers at the mall spend more money on average the day after Thanksgiving compared to the day after Christmas? The 45 randomly surveyed shoppers on the day after Thanksgiving spent an average of $148. Their standard deviation was $ 29. The 48 randomly surveyed shoppers on the day after Christmas spent an average of $ 135. Their standard deviation was 5.49 . What can be concluded at the α=0.10 level of significance? Assuming Equal Variances
Do shoppers at the mall spend less money on average the day after Thanksgiving compared to the day after Christmas? The 57 randomly surveyed shoppers on the day after Thanksgiving spent an average of $143. Their standard deviation was $30. The 53 randomly surveyed shoppers on the day after Christmas spent an average of $138. Their standard deviation was $36. What can be concluded at the αα = 0.10 level of significance? Assuming Equal Variances For this study, we should...
Use your probability knowledge to answer the following questions. What is the probability of Thanksgiving falling on a Friday next year? Please explain your answer. (10 points) What is the probability of Thanksgiving falling on a Thursday next year? Please explain your answer.
A and Z are independent events. The probability that A occurs is 1/4. What is the probability that either one of the events will occur? A. 1/2 B. 1/8 C. 1/3 D.1/4 E.1/16 <<< is E the answer A and Z are independent events. The probability that A occurs is 1/4. The probability that Z occurs is 1/4. What is the probability that either one of the events will occur? i picked B am I correct A. 1/8 B. 1/16...
The probability that a corporation made profits in 2005 is 0.81 and the probability that a corporation made charitable contributions in 2005 is 0.24. Assuming that these two events are independent, the probability (rounded to 4 decimal places) that a corporation made profits in 2005 or made charitable contributions in 2005, but not both is:
4. The Probability Calculus- Restricted Disjunction Rule To calculate the probability that either of two events will occur when the events are mutually exclusive, use the restricted disjunction rule. Two events are mutually exclusive if they cannot both occur at the same time. To calculate the probability of either of two mutually exclusive events (A and B) occurring, according to the restricted disjunction rule, use the following formula P(A or B) P(A)P(B) This formula tells you that the probability of...
The probability of sales of pumpkin pies on the day before Thanksgiving holiday is as follows: 600 pies: 0.10 700 pies: 0.20 800 pies: 0.15 900 pies: 0.25 1000 pies: 0.15 1100 pies:0.15 Each pie costs $7 to make, and sells for $15. If the pies don’t sell, the excess is donated to a food shelter, netting a $2/pie tax break. How many pies should you order?
1.) Determine whether the following individual events are overlapping or non-overlapping. Then find the probability of the combined event. -Getting a sum of either 2 or 5 on a roll of two dice 2.) Use the "at least once" rule to find the probabilities of the following event. Getting at least one head when tossing four fair coins. (What is the probability) 3) Determine the probability of having 1 girl and 3 boys in a 4-child family assuming boys and...
3. Two different events can occur called A and B. The probability that A occurs is 0.90, the probability that B is 0.70, while the probability that both occur is 0.65. Are the two events independent? What is the probability that either of the events occurs? If B occurs, what is the probability that A will occur? Sixty four athletes are to compete for an Olympic event. How many distinct ways can the three medals, gold, silver, and bronze be...
Events A and B are independent. Suppose event A occurs with probability 0.96 and event B occurs with probability 0.62.a. Compute the probability that A occurs but B does not occur.b. Compute the probability that either A occurs without B occurring or A and B both occur.