Sample of kindergarten children

Assignment Help Basic Statistics
Reference no: EM131319919

Kindergarten children have heights that are approximately normally distributed about a mean of 38.8 inches and a standard deviation of 1.5 inches. If a random sample of 21 is taken, what is the probability that the sample of kindergarten children has a mean height of less than 39.4 inches? (Give your answer correct to four decimal places)

Reference no: EM131319919

Questions Cloud

Obtained t-score for this sample under : Thirteen students were randomly selected from the College of Public Health and their diastolic blood pressure was tested. The sample mean and standard deviation were 80.9 mmHg and 2.1 mmHg respectively. What is the obtained t-score for this sample..
Negligible amounts of cash and marketable securities : Chastain Corporation is trying to determine the effect of its inventory turnover ratio and days sales outstanding (DSO) on its cash conversion cycle. Chastain’s 2016 sales (all on credit) were $121,000; its cost of goods sold is 80% of sales; and it ..
Female sex offenders : He then calculated the percentages and find that 10% of females and 6% of males had reoffended and concluded that female sex offenders were more likely to reoffend than male sex offender. What is wrong with his conclusion?
Define the law or rule that applies to this case : What is the legal issue or question raised by the facts of a case. Said in another way, what is the legal issue or question the court (you) are trying to answer? Often, the chapter question provides you with the legal issue. Sometimes, you should ..
Sample of kindergarten children : If a random sample of 21 is taken, what is the probability that the sample of kindergarten children has a mean height of less than 39.4 inches? (Give your answer correct to four decimal places)
What risks company could face in entering market in mexico : Explain what risks the company could face in entering the market in Mexico. Explain how these risks might be different than those risks faced in staying in just the American market.
Is the meeting a regularly scheduled event : Where is the meeting being conducted, and what is its purpose? Is the meeting focused on communications or problem solving, or is it a meeting with no specific agenda? Is the meeting a regularly scheduled event, such as a monthly scheduled meeting ..
Why do analysts focus on operations forecasting : Why do analysts focus on operations forecasting and financial forecasting when evaluating a future event? How is operations and financial forecasting linked? Should one be performed before the other? Why?
Determine the amount of each deposit : An investor wishes to accumulate $25,000 in a fund at the end of 12 years. To accomplish this, the investor plans to make constant deposits at the end of each year, the final payment made one year prior to the end of the investment period. Determine ..

Reviews

Write a Review

 

Basic Statistics Questions & Answers

  Distribution of weights for lab animals

Use these data to create a data-based CDF for the distribution of weights for lab animals. Estimate the probability that an animal's weight will be less than 9.5 grams.

  What percentage of the kettles will last between months

What percentage of these kettles will last between 90 and 110 months? The appliance giant offers a replacement guarantee on kettles which malfunction within a certain time of the purchase.

  Rank correlation for car fuel consumption

Listed below are the highway fuel consumption amounts (in mi/gal) from cars in three different categories. Use a 0.05 signifiacance level to test the claim that the different car categories have the same median highway fuel consumption.

  If 100 random samples of size n were drawn and if for each

question 1 if 100 random samples of size n were drawn and if for each a 99 confidence interval fornbspmu was computed

  The 95 confidence interval to judge whether the two

the manufacturer of hardness testing equipment uses steel-ball indenters to penetrate metal that is being tested.

  Probability based on combination

The singer has the following variety of songs, in no particular order: 7 relationship songs, 6 songs about people, 4 reflective songs, and 4 songs about places.

  A gas undergoes three processes in series that complete a

a gas undergoes three processes in series that complete a cycleprocess 1 - 2 compression from p1 10 lbfin2 v1 4.0 ft3

  Normally distributed stock fund annual expenses

Suppose that 10 years ago the average annual expense for stock funds was 1.19 percent. Let µ be the current mean annual expense for all stock funds, and assume that stock fund annual expenses are approximately normally distributed.

  Correlation-predication-confidence and errors

In your resources are three news articles that report on scientific studies and make recommendations on the basis of them. Write a paper analyzing these articles. For each article answer these questions and give reasons for your answers:

  Statistics null hypothesis rejection

An economic researcher would like to know whether he can reject the null hypothesis at the 0.10 level, that no more than 20% of the households in Pennsylvania make more than $70,000 per year.

  Consider the single-sample plan that utilizes

Consider the single-sample plan that utilizes n = 50 and c = 1 when N = 2000. Determine the values of AOQ and ATI for selected values of p, and graph each of these against p. Also determine the value of AOQ

  A large publishing house recently conducted a survey to

can you please help me with this question? thank you so much.a large publishing house recently conducted a survey to

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd