Create and interpret 95 confidence interval estimate of

Reference no: EM13472408

Digital cameras have taken over the majority of the point-and-shoot camera market. One of the important features of a camera is the battery life, as measured by the number of shots taken unit the battery needs to be recharged. The file DigitalCameras contains the battery life of 29 sub-compact cameras and 16 compact cameras.

a. Assuming that the population variances from both types of digital cameras are equal is there evidence of a difference in the mean battery life between the two types of digital cameras (α=0.05)?

b. Determine the p-value in (a) and interpret its meaning.

c. Assuming that the population variances from both types of digital cameras are equal, construct and interpret a 95% confidence interval estimate of the difference between the population mean battery life of the two types of digital cameras.

Reference no: EM13472408

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