A fair die is rolled 300 times and each time a number evenly divisble by three is rolled, a success is recorded. Find the probability of obtaining the following: Between 90 and 110 successes (inclusive) (Round to four decimal places)
In: Statistics and Probability
The average number of rare flowers in a 2-acre field is estimated to be 17 per acre. Find the probability that at most 13 rare flowers are found on (a) A given acre (b) On at least 4 of the next 10 acres inspected
In: Statistics and Probability
records show that 3.8% of the fuses delivered to an arsenal are defective. in a random sample of 150 fuses, what is the probability that the number of defective fuses is:
a.) less than 5
b.) more than 10
c.) between 5 and 10
In: Statistics and Probability
Suppose that it is known that the number of items produced in a factory during a week is a random variable with mean 50. If the standard deviation of a week's production is 5, then what can be said about the probability that this week's production will be between 40 and 60?
In: Statistics and Probability
The number of database queries made during any interval of time is a Poisson random variable. On average, six queries are made every minute. Determine the probability that three or more queries will be made during an interval of 15 seconds.
In: Statistics and Probability
On average, only 95% of people bought an airline ticket will show up in the airport. In an airline’s flight, 400 people bought tickets. What is the probability that the number of people coming to the airport is at least 380 but no more than 390.
In: Statistics and Probability
If a symmetric coin is tossed 100 times, by using normal approximation find the probability that:
a. it comes up H more than 60 times
b. the number of H(X) is between 60 and 90 (60≤X≤90)
In: Statistics and Probability
The mean number of pets per household is 2.96 with standard deviation 1.4. A sample of 52 households is drawn. Find the probability that the sample mean is less than 3.11.
| a. |
0.2245 |
|
| b. |
0.5676 |
|
|
c. 0.3254 |
||
| d. |
0.7726 |
In: Math
The quarterly returns for a group of 59 mutual funds with a mean of 3.8% and a standard deviation of 6.9%
can be modeled by a Normal model. Based on the model
N(0.038,0.069), what are the cutoff values for the
a) highest 10% of these funds?
b) lowest 30%?
c) middle 20%?
d) highest 70%?
In: Statistics and Probability
88.) Why is the pancreas both an endocrine and an exocrine gland?
It secretes insulin through the pancreatic duct and bile into the blood.
It secretes CCK through the pancreatic duct and insulin into the blood.
It secretes insulin through the pancreatic duct and CCK into the blood.
It secretes pancreatic juice through the pancreatic duct and insulin into the blood.
It secretes bile through the pancreatic duct and insulin into the blood.
89.) Which of the following is not a function of the liver?
It produces bile.
It removes poisonous substances from the blood and detoxifies them.
It secretes digestive enzymes into the small intestine.
It removes iron and certain vitamins from the blood and stores them.
It helps regulate blood cholesterol levels.
90.) What prevents acid from backing up into the esophagus from the stomach?
adventitia
rugae
pyloric sphincter
lower esophageal sphincter
92.) Which type of gastric gland cell secretes pepsinogen?
mucus
gastric pit stem cells
chief
enteroendocrine
parietal
93.) The _______ sphincter is considered to be a physiological sphincter because _____________
lower esophageal: it has obvious circular muscles that remain contracted at death
pyloric; it has no obvious thickening of muscle and it relaxes completely at death
lower esophageal: it has no obvious thickening of muscle and it relaxes completely at death
ileocecal; it has obvious circular muscles that remain contracted at death
pyloric: it has obvious circular muscles that remain contracted at death
In: Anatomy and Physiology