2. Here distribution is normal with mean=650 and standard deviation=153.5
a. We need to find
As distribution is normal we can convert x to z
b.
c.
Looking to do this with calculator do I use the normalcdf ? I came up with...
Part IV. Practical Applications Each American uses an average of 650 pounds of paper in a year. Assuming that the distribution normal with a standard deviation of 153.50 pounds find the probability that a randomly selected American uses: a. More than 800lbs of paper in a year. Answer: b. Less than 400lbs of paper in a year. Answer: C. Between 500 and 700 pounds of paper in a year. Answer:
4. (2pt) Exam Grades Which of these exam grades has a better relative position? a. A grade of 82 on a test with X- 85 and s- 6 b. A grade of 56 on a test with X 60 and s 5 (4pt) ROUND THE ANSWER TO THREE DECIMAL PLACES. Paper Use Each American uses an average of 650 pounds (295 kg) of paper in a year. Suppose that the distribution is approximately normal with a population standard deviation of...
I need help. PLEASE DONT USE THE STANDARD NORMAL DISTRIBUTION TABLE. use normalcdf as part of your answer. Thank you 8.1.19 Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed with mean u 212 days and standard deviation a 13 days. Complete parts (a) through () 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...
I need help. PLEASE DONT USE THE STANDARD NORMAL DISTRIBUTION TABLE. use normalcdf as part of your answer. Thank you % 8.1.25 The shape of the distribution of the time required to get an oil change at a 10-minute oil change facility is unknown. However, records indicate that the mean time is 11.5 minutes, and the standard deviation is 3.9 minutes. Complete parts (a) through (c) below. Click here to view the standard normal distribution table (page 1). Click here...
25) The average number of pounds of red meat a person consumes each year is 196 with a standard deviation of 22 pounds (Source: American Dietetic Association). If a sample n = 50 individuals is randomly selected, find the probability that the mean of the sample will be less than 200 pounds. Hint: Use CLT along with NormalCDF) A) 0.5721 B) 0.9007 C) 0.0985 D) 0.7613
A study discovered that Americans consumed an average of 11.6 pounds of chocolate per year. Assume that the annual chocolate consumption follows the normal distribution with a standard deviation of 3.5 pounds. Complete parts a through e below. a. What is the probability that an American will consume less than 88 pounds of chocolate next? year? b. What is the probability that an American will consume more than 10 pounds of chocolate next? year? c. What is the probability that...
Please help! use normalcdf or formula, but NOT STANDARD NORMAL DISTRIBUTION TABLE. thank you Homework: Distribution of Sample Means (Week 12, 6.1) 7 of 11 (9 complete) HW Score: 71.21%, 7.83 of 11 pts Score: 0.33 of 1 pt % 8.1.25 Question Help The shape of the distribution of the time required to get an all change at a 10 minute of change facility is unknown. However, records indicate that the mean time is 115 minutes, and the standard deviation...
I need help. PLEASE DONT USE THE STANDARD NORMAL DISTRIBUTION TABLE. use normalcdf as part of your answer. Thank you 8.2.11 10,000 and whose population proportion with a specified characteristic is p=0.6. Suppose a simple random sample of size n = 200 is obtained from a population whose size is N (a) Describe the sampling distribution of p. Choose the phrase that best describes the shape of the sampling distribution below. A. Not normal because ns0.05N and np(1-P) < 10....
I need help. PLEASE DONT USE THE STANDARD NORMAL DISTRIBUTION TABLE. use normalcdf as part of your answer. Thank you 8.1.19 Question Help Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed with mean = 212 days and standard deviation o 13 days. Complete parts (a) through (1) below. Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (Rage 2). (c) What is the...
I need help. PLEASE DONT USE THE STANDARD NORMAL DISTRIBUTION TABLE. use normalcdf as part of your answer. Thank you X 8.1.21 Question Help The reading speed of second grade students in a large city is approximately normal, with a mean of 92 words per minute (wpm) and a standard deviation of 10 wpm. Complete parts (a) through 1) Click here to view the standard normal distribution table (page 11 Click here to view the standard normal distribution table (page...