Samples were collected from two ponds in the bahamas to compare salinity values (in parts per thousand). several samples were drawn at each site. pond 1: 37.32, 37.71, 37.01, 37.36, 37.02, 37.54, 36.72 pond 2: 38.24, 38.51, 38.66, 39.05, 39.04 use a 0.05 significance level to test the claim that the two ponds have the same mean salinity value. (a) the test statistic is . (b) the conclusion is a. there is sufficient evidence to indicate that the two ponds have different salinity values. b. there is not sufficient evidence to indicate that the two ponds have different salinity values. (c) we should a. remove the largest and smallest values from the larger data set and only test equal size samples. b. check to see if the data appear close to normal since the sum of the sample sizes is less than 15. c. not take the results too seriously since neither sample is big enough to be meaningful. d. all of the above.

d. millimeters per hour.

step-by-step explanation:

we are given that,

carlo used a rain gauge to measure the amount of water his lawn is receiving from the sprinklers.

since, according to the options, we see that,

water cannot be measured by 'miles per hour', 'meters per second' and 'grams per seconds'.

we get that, the water can be measured by 'millimeters per hour'.

hence, the appropriate rate for describing the amount of water is 'millimeters per hour'.

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

ratio is 2 : 9

the answer is three

13.5 : 3