Hypothesis testing-confidence interval-study of mating

Reference no: EM13110095

In a field study of mating behaviour in the Mormon cricket, a biologist noted that some females mated successfully while others were rejected by the males before coupling was complete. The question arose whether some aspect of body size might play a role in mating success. The accompanying table summarizes measurements of head width (mm) in
the two groups of females.

mean sd n
successful 8.568182 0.2491058 22
unsuccessful 8.497647 0.2738049 17

a) Compute the p-value to test that the mean head width as an effect in mating success. In other words, test that the means are different. Do we have strong evidence that the mean head width as an effect in mating success?

b) Construct a 95% ci for the difference between the mean head width of both groups.

Reference no: EM13110095

Questions Cloud

Test for differences in three treatments : For the preceding problem you should find that there are significant differences among the three treatments. One reason for the significance is that the sample variances are small.

Give the phenotypes and expected proportions among progeny : An F1 plant is crossed with a plant that has glossy, cream fruit and nonbitter cotyledons. Give the phenotypes and expected proportions among the progeny of this cross.

Global test of hypothesis : Suppose that the sales manager of a large automotive parts distributor wants to estimate as early as April the total annual sales of a region.

Determine point estimate for percentage of female students : 30 students are female what would her confidence interval be if she requires the confidence level of 80%? Determine the point estimate (p) for percentage of engineering students that are female?

Hypothesis testing-confidence interval-study of mating : In a field study of mating behaviour in the Mormon cricket, a biologist noted that some females mated successfully while others were rejected by the males before coupling was complete.

Determining reliability of the components : A University Web server has five main components each with the same reliability. All five components must work for the server to function as intended.

What is the probability that the next three offspring : Alkaptonuria is a metabolic disorder in which the affectd persons produce black urine. Alkaptonuria results from an allele.

Computing hypothesis and p value : What is a p-value in testing hypothesis? How does this p-value help us to decide to/not to reject a Null hypothesis? What might happen if we do not use this p-value in particular, when we are rejecting a Null hypothesis?

What will be the genotype and phenotype of the test plant : Two true breeding plants are crossed; one is true breeding for purple kernels and dwarf stems, and the other is true breeding for white kernels and tall stems. The F1 offspring all have purple kernels and tall stems. Two of these F1 plants are the..

User Account

All Pages