The mean weight for a random sample of 16 ball bearings is

Assignment Help Basic Statistics

Reference no: EM13621565

Assume that a simple random sample has been selected from a normally distributed population and test the given claim. Use either the traditional method or P-value method as indicated. Identify the null and alternative hypotheses, test statistic, critical value(s) or P-value (or range of P-values) as appropriate, and state the final conclusion that addresses the original claim.

1) A manufacturer makes ball bearings that are supposed to have a mean weight of 30 g. A retailer suspects that the mean weight is actually less than 30 g. The mean weight for a random sample of 16 ball bearings is 28.4 g with a standard deviation of 4.2 g. At the 0.05 significance level, test the claim that the sample comes from a population with a mean weight less than 30 g. Use the traditional method of testing hypotheses.

Reference no: EM13621565

Questions Cloud

The absolute roughness of the pipeline is 2 mm the sum of : a pipeline connects 2 reservoirs. the elevation of the upper reservoir is 20 m higher than the elevation of the lower

In the second community a random survey of 90 households : a firm wanted to see if there was a significant difference between two neighboring communities in terms of the mean

The temperature of the water is 50 f determine the darcy : flow and pressure measurements are used to estimate the friction factor for a pipeline. the length of the pipeline

It is illuminated normally by white light analysis of the : a thin film having an index of refraction of 1.5 is surrounded by air. it is illuminated normally by white light.

The mean weight for a random sample of 16 ball bearings is : assume that a simple random sample has been selected from a normally distributed population and test the given claim.

The flow rate 54 cubic meters per minute the pump : a pump is used to move water from a lower reservoir to an upper reservoir. the water surface elevation in the upper

Two lenses one converging with a focal length equal to 10 : two lenses one converging with a focal length equal to 10 cm and another diverging with a focal point of -15 cm are

The voltage would be lower due to the current flow what is : a fuel cell stack consists of 75 fuel cells arranged in series each one 12cm2 in size. the stack operates at 80.c and

What is the difference betweeen the angles of incidence of : the index of refraction for silicate flint glass is 1.66 for violet light that has a wavelength in air equal to 400 nm

User Account

All Pages