Statistics of two tailed test

Reference no: EM13109928

Other research examining the effects of preschool childcare has found that children who spent time in day care, especially high quality daycare, perform better on math and language tests than children who stay at home with their mothers (Broberg, Wessels, Lamb, & Hwang, 1997). Typical results, for example, show that a sample of n = 25 children who attended day care before starting school had an average score of M = 87 with SS = 1536 on a standardized math test for which the population mean = 81.

Questions:

Is this sample sufficient to conclude that the children with a history of preschool day care are significantly different from the general population?

(Use a two-tailed test with a ? = .01)

Reference no: EM13109928

Questions Cloud

Summation by parts and ditichlets test : Suppose {a_n} (n=1 to N) and {b_n} (n=1 to N) are two finite sequences of complex numbers. Let B_k = sum b_n (sum n=1 to k) denote the partial sum of the series sum (b_n) with the convention B_0=0.

Find probability that professor requires more than 6 hours : Distributed with mean 4.6 minutes and standard deviation 1.4 minutes. If there are 75 students in class, determine probability the professor requires more than 6 hours to mark all of the midterms?

Relationship between age group and communication : USA Today reported on preferred types of office communication by different age groups. Suppose the results were based on a survey of 500 respondents in each age group.

What are the genotypes of the parents : In a type of parakeet known as a "budgie", feather color is controlled by two genes. A yellow pigment is synthesized under control of a dominant allele Y.

Statistics of two tailed test : Other research examining the effects of preschool childcare has found that children who spent time in day care, especially high quality daycare, perform better on math and language tests than children who stay at home with their mothers

Determine the genotype at this locus : In Mandel's peas, purplr flower color is dominant to white.which descriptions wouldn't allow you to determine the genotype at this locus?(please explain)

Discuss the model or economic theory : Conduct a meta-analysis of the author's economic perspective of the issue, provide a brief overview / synopsis of the issue and discuss the model or economic theory that relates to the issue presented in the news article.

Matching supply with demand : CPG Bagels starts teh day with a large production run of bagels. THroughout the morning, additional bagels are produced as needed. THe last bake is completed at 3 pm and the store closes at 8 pm.

What will be expeted proportion of plants with green seed : In Mandel's Peas, yellow seeds are dominant to green. a pure breeding yellow plant is crossed with a pure breeding green plant. all of the offspring are yellow. if one of these yellow offspring is crossed with a green plant,what will be the expete..

User Account

All Pages