Question

In: Statistics and Probability

QUATION 2 PLEASE 1) The average female bobcat weight about 9.6 kg. Let's assume μ =...

QUATION 2 PLEASE

1) The average female bobcat weight about 9.6 kg. Let's assume μ = 9.6 and σ = 1.65kg. a) Calculate Pr{Y > 10.3} b) Now assume you have a sample of n = 26 male bobcats. Calculate Pr{ Ȳ > 10.3}. c) Which probability is lower? Why? 2) Refer to problem 1. Now assume you take a sample of n = 4 male bobcats. a) What is the probability of the sample average being within 0.75 kg of the population mean (9.6 kg)? In other words, you need to figure out Pr{ μ - .75 < Ȳ < μ + .75} b) What is the probability of the sample average being within 0.75 kg of the population mean if the population mean is actually μ = 10.8 kg? Are you surprised? Why or why not? You should make sure you understand what happened here. c) Now assume a sample of n = 26 male bobcats and repeat (a). What is the effect of sample size?

Solutions

Expert Solution

Please like if it helps me

Thank you so much


Related Solutions

1) The average female bobcat weight about 9.6 kg. Let's assume μ = 9.6 and σ...
1) The average female bobcat weight about 9.6 kg. Let's assume μ = 9.6 and σ = 1.75kg. a) Calculate Pr{Y > 11.5} b) Now assume you have a sample of n = 16 male bobcats. Calculate Pr{ Ȳ > 11.5}. c) Which probability is lower? Why? 2) Refer to problem 1. Now assume you take a sample of n = 9 male bobcats. a) What is the probability of the sample average being within 0.5 kg of the population...
SEX: Sex (1=Male 2=Female) WEIGHT: Body Weight (kg) 1 61.236 1 79.38 1 99.792 1 81.648...
SEX: Sex (1=Male 2=Female) WEIGHT: Body Weight (kg) 1 61.236 1 79.38 1 99.792 1 81.648 1 72.576 1 61.236 1 83.916 1 97.524 1 88.452 1 79.38 2 57.607 2 64.184 2 63.958 2 133.358 2 62.143 2 58.968 2 58.514 2 61.69 2 107.503 2 83.009 Open Brain data. Claim: Male and female subjects have different weight. 9. What test/procedure did you perform? a. One-sided t-test b. Regression c. Two-sided t-test d. ​​Confidence interval 10. What is the...
The body weight of a healthy 3-month-old colt should be about μ = 64 kg. (a)...
The body weight of a healthy 3-month-old colt should be about μ = 64 kg. (a) If you want to set up a statistical test to challenge the claim that μ = 64 kg, what would you use for the null hypothesis H0? μ > 64 kg μ < 64 kg μ = 64 kg μ ≠ 64 kg (b) In Nevada, there are many herds of wild horses. Suppose you want to test the claim that the average weight...
Two-Sample T-Test and CI: Weight, Gender Method μ₁: mean of weight when Gender = Female µ₂:...
Two-Sample T-Test and CI: Weight, Gender Method μ₁: mean of weight when Gender = Female µ₂: mean of weight when Gender = Male Difference: μ₁ - µ₂ Equal variances are not assumed for this analysis. Descriptive Statistics: Weight Gender : N ----   Mean ----- StDev    Female : 315 -----  170 ------- 50      Male : 42 ----- 196 -------- 65           Test Null hypothesis          H₀: μ₁ - µ₂ = 0 Alternative hypothesis          H₁: μ₁ - µ₂ ≠ 0 T-Value                       P-Value -----                                ...
1. Assume that the average weight of an NFL player is 245.7 lbs with a standard...
1. Assume that the average weight of an NFL player is 245.7 lbs with a standard deviation of 34.5 lbs. The distribution of NFL weights is not normal. Suppose you took a random sample of 32 players. What is the probability that the sample average will be between 242 and 251 lbs? Round your answer to three decimal places, eg 0.192. 2. Given a sample with a mean of 57 and a standard deviation of 8, calculate the following probabilities...
In the U.S., newborn babies weight an average of 7.2 pounds (μ). The standard deviation is...
In the U.S., newborn babies weight an average of 7.2 pounds (μ). The standard deviation is 1.22 pounds (σ). The population distribution of birth weights is roughly Normal. You draw a simple random sample of 60 births from the population and find that the sample mean is 7.4 pounds. NOTE: Use the most precise estimate of z or z* you can in these problems as in all your written results. Draw a picture of the distribution, label, and shade as...
A pregnant female of age 38 years, her weight is 80 Kg and her height is...
A pregnant female of age 38 years, her weight is 80 Kg and her height is 160 cm, was admitted to hospital due to unknown reason high temperature 38 ºC, she had symptoms like night sweat, general weakness, weight loss of unknown reason, also non- itchy spots on her neck. The physician advised her to admit hospital for more investigations as she is pregnant in the 3rd trimester, after blood test, WBC count was 3500 /mm3 and Hb was 9...
The average weight and the variance of 10,000 cans of soup is 83 and 9 kg....
The average weight and the variance of 10,000 cans of soup is 83 and 9 kg. The distribution of weights is unknown. What is the hypothesis statistic for testing Ho : µ = 80 vs. H1 : µ ≠ 80 ?
Assume the average weight of a player in the NFL is normally distributed with a population...
Assume the average weight of a player in the NFL is normally distributed with a population mean of 245 pounds with a population standard deviation of 46 pounds. Suppose we take a sample of 50 NFL players. a. What is the probability that a randomly selected player will weigh over 300 pounds? b. What is the probability that a randomly selected player will weigh under 180 pounds? c. What is the probability that a randomly selected player will weigh between...
a. Assume that the average weight of an NFL player is 245.7 lbs with a standard...
a. Assume that the average weight of an NFL player is 245.7 lbs with a standard deviation of 34.5 lbs. The distribution of NFL weights is not normal. Suppose you took a random sample of 32 players. What is the probability that the sample average will be greater than 250 lbs? Round your answer to three decimal places, eg 0.192. b. Assume that the average weight of an NFL player is 245.7 lbs with a standard deviation of 34.5 lbs....
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT