Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

Multiple choice problems based on Standard normal distribution.

1) At a computer manufacturing company the real size of computer chips is normally distributed with a mean of 1 centimetre as well as a standard deviation of 0.1 centimetre. A random ex of 12 computer chips is taken. describe what is the standard error for the sample mean?

1) 0.029

2) 0.050

3) 0.091

4) 0.120

2) At a computer manufacturing company and the actual size of computer chips is usually distributed with a mean of 1 centimetre and a standard deviation of 0.1 centimetre. A random ex of 12 computer chips is taken. describe the probability that the sample mean will be between 0.99 and 1.01 centimetres?

3) The owner of a fish market has an associate who has determined that the weights of catfish are normally distributed with mean of 3.2 pounds as well as standard deviation of 0.8 pound. If a sample of 25 fish yields a mean of 3.6 pounds what is the Z-score for this observation?

1) 18.750

2) 2.500

3) 1.875

4) 0.750

4) The amount of time required for an oil as well as filter change on an automobile is normally distributed with a mean of 45 minutes as well as a standard deviation of 10 minutes. A random sample of 16 cars is selected. describe the probability that the sample mean is between 45 and 52 minutes?

5) Times spent studying by students in the week beforehand final exams follow a normal distribution with standard deviation 8 hours.  A random sample of four students was taken in order to estimate the mean study time for the population of all students. describe the probability that the sample mean exceeds the population mean by more than two hours?

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M920313

Have any Question? 


Related Questions in Statistics and Probability

According to a recent poll 29 of adults in a certain area

According to a recent poll, 29% of adults in a certain area have high levels of cholesterol. They report that such elevated levels "could be financially devastating to the regions healthcare system" and are a major conce ...

The mean incubation time for a type of fertilized egg kept

The mean incubation time for a type of fertilized egg kept at 100.7° F is 22days. Suppose that the incubation times are approximately normally distributed with a standard deviation of 2 days. (a) The probability that a r ...

Imagine that you predicted a moderate correlation between

Imagine that you predicted a moderate correlation between people's scores on a measure of anxiety and the degree to which they report having insomnia. You administered measures of anxiety and insomnia to a sample of 30 p ...

In a survey of 617males agesnbsp18-64 396 say they have

In a survey of 617males ages 18-64, 396 say they have gone to the dentist in the past year. Construct 90% and 95% confidence intervals for the population proportion. Interpret the results and compare the widths of the co ...

A statisticsnbspinstructor at a large western university

A statistics instructor at a large western university would like to examine the relationship (if any) between the number of optional homework problems students do during the semester and their final course grade. She ran ...

A student wonders if people of similar heights tend to date

A student wonders if people of similar heights tend to date each other. She measures herself, her roommate, and the women in adjoining rooms; then she measures the next man each woman dates. Here are the data (heights in ...

Explain i the hypotheses with a plausible definition of p

Explain (i) the hypotheses with a plausible definition of p or µ, (ii) whether or not the data indicate practical significance (use common sense and/or general knowledge), and (iii) whether or not the data indicate stati ...

1 give five examples of physiological measures2 what

1. Give five examples of physiological measures. 2. What considerations must a researcher keep in mind when writing the questions to be used on a questionnaire or in an interview? 3. What is a double-barreled question? 4 ...

Grear tire company has produced a new tire with an

Grear Tire Company has produced a new tire with an estimated mean lifetime mileage of 36,500 miles. Management also believes that the standard deviation is 5000 miles and that tire mileage is normally distributed. To pro ...

30000 people participated in an online poll on cnncom

30,000 people participated in an online poll on cnn.com conducted in April 2012 asking "Have you ever driven with a pet on your lap?" 34% of the participants answered yes and 66% answered no. (a) Can we conclude that 34% ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro