Homework Answers
No, we can't calculate the probability for the sample mean. Because for the calculating the probability of sample mean the distribution needed must be normal.
Add Answer to:
Question 3 (0.5 points) A random variable X has a left-skewed distribution with mean of 50...
Question 2 (0.5 points) A random variable X follows a normal distribution with mean of 50...
Question 2 (0.5 points) A random variable X follows a normal distribution with mean of 50 and standard deviation of 5. Suppose we take a simple random sample of size 60 from the population above. Can we calculate the probability that the sample mean is between 45 and 60? (You do not need to actually calculate the probability for this question.) Yes, and the calculated probability would be exact. Yes, and the calculated probability would be approximate. No. Question 3...
Question 1 (0.5 points) A random variable X follows a normal distribution with mean of 50...
Question 1 (0.5 points) A random variable X follows a normal distribution with mean of 50 and standard deviation of 5. Suppose we take a simple random sample of size 6 from the population above. Can we calculate the probability that the sample mean is between 45 and 60? (You do not need to actually calculate the probability for this question.) Yes, and the calculated probability would be exact. Yes, and the calculated probability would be approximate. No. Question 2...
5. The weights of a shipment of Granny Smith apples follow a right-skewed distribution with mean...
5. The weights of a shipment of Granny Smith apples follow a right-skewed distribution with mean 185 grams and standard deviation of 13 grams. Using this information, answer the following, if possible. (a) Suppose we take a simple random sample of 6 apples from this shipment. What is the probability that the sample mean weight is less than 180 grams? (b) Suppose we take a simple random sample of 35 apples from this shipment. What is the probability that the...
Life expectancy in a country is known to follow a left-skewed distribution with a mean value...
Life expectancy in a country is known to follow a left-skewed distribution with a mean value of 78.26 years and a standard deviation of 4.29 years. Suppose we take a random sample of 8 members of this country, and calculate their average life expectancy. What is the probably that this sample has an average value of at most 78.52 years? Select one: a. 0.6844 b. 0.9127 c. 0.4800 d. 0.3156 e. We cannot answer this question with the information given.
A population is slightly skewed to the left, has a mean of 50 and a standard...
A population is slightly skewed to the left, has a mean of 50 and a standard deviation of 7. If a random sample of 28 items are selected from this population, then the mean score of these 28 items is from a sampling distribution that has a standard deviation of ...
Question number 4: Life expectancy in a country is known to follow a left-skewed distribution with...
Question number 4: Life expectancy in a country is known to follow a left-skewed distribution with a mean value of 79.66 years and a standard deviation of 3.06 years. Suppose we take a random sample of 15 members of this country, and calculate their average life expectancy. What is the probably that this sample has an average value of at most 79.74 years?
Life expectancy in a country is known to follow a left-skewed distribution with a mean value...
Life expectancy in a country is known to follow a left-skewed distribution with a mean value of 81.00 years and a standard deviation of 3 30 years. Suppose we take a random sample of 15 members of this country, and calculate their average life expectancy. What is the probably that this sample has an average value of at most 80.97 years? Select one: O 0.3073 b. 0.5517 O c 0.1300 d. 0.4483 e. We cannot answer this question with the...
The original population is severely left-skewed. The sampling distribution of sample mean is A. right-skewed for...
The original population is severely left-skewed. The sampling distribution of sample mean is A. right-skewed for a sample size of 20 B. left-skewed for a sample size of 20. C. skewed for a sample size of 10 D. approximately normal for a sample size of 100
1. Lifetimes of a certain brand of lightbulbs is known to follow a right-skewed distribution with...
1. Lifetimes of a certain brand of lightbulbs is known to follow a right-skewed distribution with mean 24 months and standard deviation 2 months. Suppose that a sample of 52 lightbulbs is taken. What is the probability that the average lifetime of these bulbs is greater than 24.32 months? Answer is 0.1251 5. fill amounts of jars of peanuts from a certain factors are known to follow a Normal distribution with mean 454g and standard deviation 15g. Suppose that a...
Runtimes at a local marathon are known to follow a left-skewed distribution with a mean of...
Runtimes at a local marathon are known to follow a left-skewed distribution with a mean of 256 minutes and a standard deviation of 66 minutes if we select a random sample of 57 people, what is the probability that the average run time of this sample will be between 238 516 minutes and 261 245 minutes? Select one a 0.1361 b0 7257 c. We cannot answer the question with the information given Od 0.7030
Question 2 (0.5 points) A random variable X follows a normal distribution with mean of 50 and standard deviation of 5. Suppose we take a simple random sample of size 60 from the population above. Can we calculate the probability that the sample mean is between 45 and 60? (You do not need to actually calculate the probability for this question.) Yes, and the calculated probability would be exact. Yes, and the calculated probability would be approximate. No. Question 3...
Question 1 (0.5 points) A random variable X follows a normal distribution with mean of 50 and standard deviation of 5. Suppose we take a simple random sample of size 6 from the population above. Can we calculate the probability that the sample mean is between 45 and 60? (You do not need to actually calculate the probability for this question.) Yes, and the calculated probability would be exact. Yes, and the calculated probability would be approximate. No. Question 2...
5. The weights of a shipment of Granny Smith apples follow a right-skewed distribution with mean 185 grams and standard deviation of 13 grams. Using this information, answer the following, if possible. (a) Suppose we take a simple random sample of 6 apples from this shipment. What is the probability that the sample mean weight is less than 180 grams? (b) Suppose we take a simple random sample of 35 apples from this shipment. What is the probability that the...
Life expectancy in a country is known to follow a left-skewed distribution with a mean value of 81.00 years and a standard deviation of 3 30 years. Suppose we take a random sample of 15 members of this country, and calculate their average life expectancy. What is the probably that this sample has an average value of at most 80.97 years? Select one: O 0.3073 b. 0.5517 O c 0.1300 d. 0.4483 e. We cannot answer this question with the...
Runtimes at a local marathon are known to follow a left-skewed distribution with a mean of 256 minutes and a standard deviation of 66 minutes if we select a random sample of 57 people, what is the probability that the average run time of this sample will be between 238 516 minutes and 261 245 minutes? Select one a 0.1361 b0 7257 c. We cannot answer the question with the information given Od 0.7030
Most questions answered within 3 hours.
-
4. Without doing any calculations, predict whether the observed
∆T would increase, decrease or remain the...
asked 33 minutes ago -
Based on the range, which of the following sets of scores has
the greatest variability? 3,...
asked 1 hour ago -
Ripples in a pond travel at a velocity of 3 m/s with one peak
passing a...
asked 1 hour ago -
A man stands on the roof of a building of height 13.0 mm and
throws a...
asked 1 hour ago -
The extent to which assets are financed by borrowed funds and
other liabilities is indicated by:...
asked 2 hours ago -
Explain in detail
Germany is the fifth largest economy
explain what goods and services Germany specializes...
asked 2 hours ago -
The density of platinum is 21.45 g/mL. If a cube of platinum
with a mass of...
asked 2 hours ago -
Accounts Receivable
Sales
A/R Posting
Extended Sales Invoice
Packing Slip
Compare invoice to packing slip 2...
asked 3 hours ago -
Michaella, age 23, is a full-time law student and is claimed by
her parents as a...
asked 3 hours ago -
Why are polymers not typically casted into products?
asked 3 hours ago -
When rolling a die 129 times, what is the probability of rolling
a 6 no more...
asked 3 hours ago -
4. A call option currently sells for $7.75. It has a strike
price of $85 and...
asked 3 hours ago