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  3. digital cameras have taken over the majority of the pointandshoot...

Question: digital cameras have taken over the majority of the pointandshoot...

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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 until the battery needs to be recharged. A random sample of 29 sub-compact cameras (Population D yielded a mean of 127 shots between recharges, with a standard deviation of 5.5 shots. A random sample of 16 compact cameras (Population 2) yielded a mean of 115 shots between recharges, with a standard deviation of 4.2 shots. Assume that the population variances are not equal Using a significance level of a-01, if a hypothesis is conducted to determine whether the mean battery life for sub-compact cameras is greater than the mean life of compact cameras, what conclusion should be reached? The mean battery life for sub-compact cameras is greater than the mean battery life of compact cameras O There is no difference in the mean battery life for sub-compact and compact cameras. O The mean battery life for sub-compact cameras is not greater than the mean battery life of compact cameras, O There mean battery life for compact cameras is greater than the mean battery life of sub-compact cameras.

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