On a standardized science test the seniors at Fillmore High School have a mean score of 440 with a standard deviation of 80. What is the probabllity that a random sample of 40 seniors has a mean score of at most 4307 If necessary round your answer to the nearest hundredth. The probability that a random sample of 40 seniors has a mean score of at most 430 is about ___. ​

Find all the values of x that make 0.1x + 0.25(102 - x) < 17.10 true.

Write a function rule for the table

Farmers know that driving heavy equipment on wet soil compresses the soil and injures future crops. here are data on the "penetrability" of the same type of soil at two levels of compression. penetrability is a measure of how much resistance plant roots will meet when they try to grow through the soil. compressed soil 2.85 2.66 3 2.82 2.76 2.81 2.78 3.08 2.94 2.86 3.08 2.82 2.78 2.98 3.00 2.78 2.96 2.90 3.18 3.16 intermediate soil 3.17 3.37 3.1 3.40 3.38 3.14 3.18 3.26 2.96 3.02 3.54 3.36 3.18 3.12 3.86 2.92 3.46 3.44 3.62 4.26 use the data, omitting the high outlier, to give a 95% confidence interval for the decrease in penetrability of compressed soil relative to intermediate soil. compute degrees of freedom using the conservative method. interval: to