Listed below are the lead concentrations in μ​g/g measured in different traditional medicines. Use a 0.01 significance level to test the claim that the mean lead concentration for all such medicines is less than 13 μ​g/g. Assume that the sample is a simple random sample. 5 16 3.5 5 9 22.5 11.5 5 14 9.5
Identify the null and alternative hypotheses.

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,

8 2/3 is the answer

step-by-step explanation: just use a calculator

child does not get an education so she can use the molla on junk