The amount of time that a drive-through bank teller spends on a customer is a random...
The amount of time that a drive-through bank teller spends on a customer is a random variable with a mean 3.2 minutes and a standard deviation a = 1.6 minutes. If a random sample of 64 customers is observed, find the probability that their mean time at the teller's window is A. at most 2.7 minutes; B. more than 3.5 minutes; C. at least 3.2 minutes but less than 3.4 minutes (10 pts. each, 30 pts. total)
ft) The amount of time a bank teller spends on a customer is a random variable with mean u 3.2 min and standard deviation 1.6 min. If a random sample of 64 customers is observed, find the probability that their mean time at the teller's counter is (i) at most 2.7 mirn (ii) more than 3.5 min (iii) at least 3.2 min but less than 3.4 min (iv) find the mean time interval spent by the middle 80% of the...
Arrivals to a bank automated teller machine (ATM) are distributed according to a Poisson distribution with a mean equal to per minutes. Complete parts six 10 a and b below. Click here to view page 1 of the table of Poisson probabilities.1 Click here to view page 2 of the table of Poisson probabilities.2 Click here to view page 3 of the table of Poisson probabilities.3 Click here to view page 4 of the table of Poisson probabilities.4 Click here...
A study found that the mean amount of time cars spent in drive-throughs of a certain fast-food restaurant was 148.4 seconds. Assuming drive-through times are normally distributed with a standard deviation of 26 seconds, complete parts (a) through (d) below. Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). Your mur pur us. (d) Would it be unusual for a car to spend more than 3 minutes...
A study found that the mean amount of time cars spent in drive-throughs of a certain fast-food restaurant was 138.6 seconds. Assuming drive-through times are normally distributed with a standard deviation of 30 seconds, complete parts (a) through (d) below. Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). (a) What is the probability that a randomly selected car will get through the restaurant's drive-through in less...
A study found that the mean amount of time cars spent in drive-throughs of a certain fast-food restaurant was 139.9 seconds. Assuming drive-through times are normally distributed with a standard deviation of 31 seconds, complete parts (a) through (d) below. Click here to view the standard normal distribution table (page 1). LOADING... Click here to view the standard normal distribution table (page 2). LOADING... (a) What is the probability that a randomly selected car will get through the restaurant's drive-through...
answer part c please A study found that the mean amount of time cars spent in drive-throughs of a certain fast-food restaurant was 134.2 seconds. Assuming drive-through times are normally distributed with a standard deviation of 34 seconds, complete parts (a) through (d) below. Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). (Round to four decimal places as needed.) (b) What is the probability that a...
A random variable follows the normal probability distribution with a mean of 100 and a standard deviation of 10. Determine the probability for a randomly selected value from this population in parts a through d below. Click here to view page 1 of the standard normal probability table. Click here to view page 2 of the standard normal probability table. a. What is the probability that the value is less than 80? The probability that the value is less than...
The answers are in red. Please answer all. I have a hard time understanding when to use the table According to eMarketer, adults in the United States spent an average of 92 minutes per day on social media platforms Facebook, Snapchat, and Instagram in 2017. Assume that minutes per day on these platforms follow a normal distribution with a standard deviation of 29. Complete parts a through d. Click here to view page 1 of the standard normal distribution table....
Given a standardized normal distribution (with a mean of 0 and a standard deviation of 1) complete parts (a) through (d) below. Click here to view page 1 of the cumulative standardized normal distribution table, Click here to view page 2 of the cumulative standardized normal distribution table. a. What is the probability that Z is between 1.57 and 1.83? - The probability that Z is between 1.57 and 1.83 is (Round to four decimal places as needed.) particular train...