esting: H0:μ=49.485 H1:μ≠49.485 Your sample consists of 26 subjects, with a mean of 49.4 and standard deviation of 1.83. Calculate the test statistic, rounded to 2 decimal places. t=

The length of a metal block is measured 4 times using a ruler. The results are shown below: measurement # length l (mm)            1 23.5               2 23.8          3 23.2     4 23.6                                First, calculate the mean length  and fill it in the blank below. Next, fill in the blanks for the differences and  in the table above. Finally, calculate the standard deviation, the standard deviation of the mean and the 2σ uncertainty and fill in the blanks below. Important notes (read before entering your answers): Enter the values in mm using decimal notation (e.g. 0.0123). A leading zero before the decimal point must be entered (e.g. 0.0123, not .0123). Do not use scientific notation, as it will not be recognized, and do not enter the units. Do not round the numbers, as this may cause rounding errors to accumulate.   Mean length:   mm Standard deviation   mm Standard deviation of the mean   mm 2σ uncertainty              mm

H0: μ ≤ 16.09 vs. HA: μ > 16.09What is the test statistic for sample of size 25, mean 13.97,and standard deviation 1.48?

Cereals sodium values have a mean of 167 and a standard deviation of 77.3. Find the z-score for the cereal that has a sodium value of 0. How would you interpret this z-score?