Let X be the weights of parcel .
So, X~N( 20,5)
Empirical rule:
a)
b)
(a) what percent of the group of eggs was less than 22.75mm long? (b) What is...
Use the Empirical Rule to answer each question. During 1 week an overnight delivery company found that the weights of its parcels were normally distributed, with a mean of 24 ounces and a standard deviation of 6 ounces (a) What percent of the parcels weighed between 12 ounces and 30 ounces? (Round your answer to one decimal place.) (b) What percent of the parcels weighed more than 42 ounces? (Round your answer to two decimal places.) Need Help? Weich T...
The question is asking for proportions for each problem and for the answers to be rounded four decimal places Baby weights: The weight of male babies less than 2 months old in the United States is normally distributed with mean 12.5 pounds and standard deviation 5.1 pounds. Use the TI-84 Plus calculator to answer the following. (a) What proportion of babies weigh more than 14 pounds? (b) What proportion of babies weigh less than 16 pounds? (c) What proportion of...
exercise 14-10 letter B.
i calculated with a final result 0.0004 but its being marked
wrong. Please help understand.
Unit 3, Topic 14, Exercice 14-10 Candy Bar Welghts 0.015 1125 Suppose the wrapper of a certsin candy bar lsts its weight as 2.13 ounces. Naturally, the weights of individual bars vary somevhat. Suppose also that the weights of these candy bars vary according to a normal distribution with mean μ-2.2 ounces and standard deviation σ 0.04 ounces. a. What does...
Consider a value to be significantly low if its z score less than or equal to minus2 or consider a value to be significantly high if its z score is greater than or equal to 2. A data set lists weights (grams) of a type of coin. Those weights have a mean of 5.26523 g and a standard deviation of 0.05144 g. Identify the weights that are significantly low or significantly high. What weights are significantly low? Select the correct...
The mean weight of a box of cereal filled by a machine is 18.0 ounces, with a standard deviation of 0.4 ounce. If the weights of all the boxes filled by the machine are normally distributed, what percent of the boxes will weigh the following amounts? (Round your answers to two decimal places.) (a) less than 17.5 ounces (b) between 17.8 and 18.2 ounces
Consider a value to be significantly low if its z score less than or equal to - 2 or consider a value to be significantly high if its z score is greater than or equal to 2. A data set lists weights (grams) of a type of coin. Those weights have a mean of 5.36344 g and a standard deviation of 0.05415g. Identity the weights that are significantly low or significantly high. What weights are significantly low Select the correct answer below...
1. Assume that the weights of a particular group of men follow approximately a normal distribution with a mean of 168.7 pounds and a standard deviation of 13.5 pounds. Use built-in functions of your calculator (write down what you entered in one line) or Table A.2. to answer the following questions. No credit if you use the Rule covered in Chapter 7. Show your work to receive credit. Clearly state the answer. a) What percent weigh between 160 and 190...
The average cholesterol content of a certain brand of eggs is 224 milligrams, and the standard deviation is 13 milligrams. Assume the variable is normally distributed. If a sample of 21 eggs is randomly selected, find the probability that the mean of the sample will be larger than 221 milligrams. u= milligrams milligrams ? Select an answer PC ? ? Select an answer Select an answer Round each box to two decimal places Now select your normal distribution curve with...
Use the Empirical Rule to answer the questions below: The distribution of weights for newborn babies is approximately normally distributed with a mean of 7.6 pounds and a standard deviation of 0.8 pounds. 1. What percent of newborn babies weigh more than 8.4 pounds? _____% 2. The middle 95% of newborn babies weigh between _____and____ pounds. 3. What percent of newborn babies weigh less than 6 pounds? ____% 4. Approximately 50% of newborn babies weigh more than____ pounds. 5. What...
Question 17 (5 points) Following are the weights of 5 boxes of cookies, each of which is labeled as containing 16 ounces. Assume that the population of weights is normally distributed 15.91, 14.50 , 14.88, 16.07, 14.79 A quality control inspector wants to know whether the mean weight is actually less than 16 ounces. Compute the P-value of the test. Write down your P-value. You will need it for the next question. Write only a number as your answer. Round...