Here, μ = 50.4, σ = 4.7091 and x = 51. We need to compute P(X >= 51). The corresponding z-value is calculated using Central Limit Theorem
z = (x - μ)/σ
z = (51 - 50.4)/4.7091 = 0.13
Therefore,
P(X >= 51) = P(z <= (51 - 50.4)/4.7091)
= P(z >= 0.13)
= 1 - 0.5517 = 0.4483
A market research firm conducts telephone surveys with a 56% historical response rate. If 90 individuals...
A market research firm conducts telephone surveys with a 45% historical response rate. If 80 individuals are contacted, find the probability that 35 or less of them will cooperate and respond to the survey questions. O a. 0.7247 O b.0.4129 O None of the answers is correct O d. 0.5871 O.0.2753
A market research firm conducts telephone surveys with a 44% historical response rate. What is the probability that in a new sample of 400 telephone numbers, at least 150 individuals will cooperate and respond to the questions? In other words, what is the probability that the sample proportion will be at least 150/400 = .375?
A market research firm conducts telephone surveys with a 28% historical response rate. What is the probability that in a new sample of 600 telephone numbers, at least 150 individuals will cooperate and respond to the questions? In other words, what is the probability that the sample proportion will be at least 150/600 = 0.25?
A market research firm conducts telephone surveys with a 38% historical response rate. What is the probability that in a new sample of 400 telephone numbers, at least 150 individuals will cooperate and respond to the questions? In other words, what is the probability that the sample proportion will be at least 150/400 = .375 (to 4 decimals)? Use z-table.
A market research firm conducts telephone surveys with a 44% historical response rate, what is the probability that in a new sample of 400 telephone numbers, at least 150 individuals will cooperate and respond to the questions? In other words, wha least 15O/400 = .375 (to 4 decimals)? Use z-table. t is the probability that the sample proportion will be at
A market research firm conducts telephone surveys with a 42% historical response rate. What is the probability that in a new sample of 400 telephone numbers, at least 150 individuals will cooperate and respond to the questions? In other words, what is the probability that the sample proportion will be at least 150/400 = .375 (to 4 decimals)? Use z- table.
What is the probability that in a new sample of 400 telephone numbers, at least 150 individuals will cooperate and respond to the questions? In other words, what isthe probability that the sample proportion will be at least 150/400 = .375?Calculate the probability to 4 decimals.
Exercise 07.51 Algorithmic Question 3 of 3 Check My Work (2 remaining) A market research firm conducts telephone surveys with a 40% historical response rate. What is the probability that in a new sample of 400 telephone numbers at least 150 individuals will cooperate and respond to the questions? In other words, what is the probability that the sample proportion will be at least 150/400 375 (to 4 decimals)? Use z-table.
i need help answering these few questions. thank u
Exercise 07.51 Algorithmic eBook Exercise 7.51 (Algorithmic) A market research firm conducts telephone surveys with a 41% historical response rate. a. What the probability that in a new sample of 400 telephone numbers, at least 140 individuals will cooperate and respond to the sample proportion will be at least 140/400 -0.357 Calculate the standard error to 4 decimals. 0.0244 Calculate the probability to 4 decimals, showing your steps along the way....
C. Find P-value
A survey from a reputable market research firm indicated that 56% of women have had experience with a global positioning system. The survey indicated that 66% of the men surveyed have used a GPS device. Complete parts a and b below. a. If the survey was based on a sample size of 200 men, do these data indicate that the proportion of men is the same as the proportion of women who have had experience with a...