here is the data Many studies have suggested that there is a link between exerci

Question

here is the data

Many studies have suggested that there is a link between exercise and healthy bones. Exercise stresses the bones and this causes them to get stronger. One study examined the effect of jumping on the bone density o growing rats. There were three treatments: a control with no umping, a lo mp condition the ump height as 30 cent meters and a high mp condition 50 centimeter After 8 of 10 Jumps per day, 5 days per week, the bone density of the rats (expressed in mg/cm2) was measured. Here are the data. data372.dat (a) Make a table giving the sample size, mean, and standard deviation for each group of rats. Consider whether or not it is reasonable to pool the variances. (Round your answers for , s, and sr to one decimal place.) Group 5.9 ow jump igh (b) Run the analysis of variance. Report the F statistic with its degrees of freedom and P-value. What do you conclude? (Round your test statistic to two decimal places and your P-value to three decimal places.) Conclusion: There is-Select. statistically significant difference between the three treatment means at the -05 level

Explanation / Answer

appplying one way ANOVA on above data:

F =3.40

p value =0.0481 ( please try 0.0482 if this does not work due to rounding(

there is a statsitically singificant ..............

Groups n xbar s sxbar Control 10 606.1 29.8 9.4 Lowjump 10 631.8 7.2 2.3 Highjump 10 616.5 23.1 7.3

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