User Account

All Pages

Develop the ability to crawl at different ages

Assignment Help Basic Statistics
Reference no: EM131650246

Question: Crawling. A study published in 1993 found that babies born at different times of the year may develop the ability to crawl at different ages! The author of the study suggested that these differences may be related to the temperature at the time the infant is 6 months old. (Benson and Janette, Infant Behavior and Development [1993])

a) The study found that 32 babies born in January crawled at an average age of 29.84 weeks, with a standard deviation of 7.08 weeks. Among 21 July babies, crawling ages averaged 33.64 weeks, with a standard deviation of 6.91 weeks. Is this difference significant?

b) For 26 babies born in April the mean and standard deviation were 31.84 and 6.21 weeks, while for 44 October babies the mean and standard deviation of crawling ages were 33.35 and 7.29 weeks. Is this difference significant?

c) Are these results consistent with the researcher's conjecture?

Reference no: EM131650246

Questions Cloud

Legal environment of hrm : After viewing the film clip titled "Legal Environment of HRM" in the first section above, answer the following questions:
Define what are the major factors influencing plea : What is considered the primary benefit of a plea for defendants and what are the major factors influencing plea
Define what is a disaster recovery center : What are the three main groupings of disaster response performed by the UN OCHA and give examples
Discuss the notion that customers are best judges of process : Essay - Discuss the notion that customers are the best judges of quality of a service process. Why is it important to understand customer expectations
Develop the ability to crawl at different ages : Crawling. A study published in 1993 found that babies born at different times of the year may develop the ability to crawl at different ages!
Important goals of human resource management : What are the important goals of human resource management? For each goal, give two examples of specific HR actions or techniques that organizations.
Describe each of these important amendments : briefly describe each of these important Amendments and how they impact the court system
Can pleasant smells improve learning : Mazes and smells. Can pleasant smells improve learning? Researchers timed 21 subjects as they tried to complete paper-and-pencil mazes.
Test an appropriate hypothesis and state conclusion of case : Women. The U.S. Census Bureau reports that 26% of all U.S. businesses are owned by women. A Colorado consulting firm surveys a random sample of 410 businesses.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Standard deviation for the defective transistors

Find the standard deviation for the defective transistors.

  Values of probability based on binomial distribution

Find the probability of exactly 6 Mexican-Americans among 12 jurors.

  Random variable having a normal distribution

Suppose a certain oil producing country exports (1 + X) million barrels of oil per day, where X is a random variable having a normal distribution with mean zero and variance 1/25.

  Mathew r is conducting a study on the dollar value of

mathew r. is conducting a study on the dollar value of orders placed with various suppliers. a sample of 10 orders

  Among sofas having a defect in the fabric what is the

a. a furniture manufacturer produces sofas. to improve their production process they make a study of the sources of

  Mean weight-constructing confidence interval

Construct a 96% confidence interval for the mean weight of all firefighters six months after the exercise rooms were installed.

  Suppose that x is a geometric random variable a prove that

suppose that x is a geometric random variable. a prove that for positive integers n and k pxnkxgtnpxk. bexplain what

  Determine the upper and the lower control limits

A production process that is in control has a mean (m) of 80 and a standard deviation (s) of 10. Determine the upper and the lower control limits for sample sizes of 25

  Proportion of female managers

A company wishes to test whether the proportion of female managers is the same as the proportion of male managers. The following table provides data for a sample of employees.

  Do students prefer a particular green

A survey of Ohio University students was conducted to determine if there was a particular Green that was desired by students to live on. A sample of students responses are reproduced below. Do students prefer a particular Green? Use critical value..

  Find f values for experiment-sum of squares for blocks given

If the Sum of Squares for Treatments (SST) is 10% of SS(Total), and the Sum of Squares for Blocks (SSB) is 20% of SS (Total), find the F values for this experiment.

  More on determining hypotheses

State the null hypothesis H0 and the alternative hypothesis Hain each case. Be sure to identify the parameters that you use to state the hypotheses.

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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