Select the correct statement a left-tailed hypothesis test is significant at the 0.05 level if the standard score of the sample
mean is less than or equal to z=-1.645
a left-tailed hypothesis test is significant at the 0.05 level if the standard score of the sample
mean is higher than or equal to z=-1.645
a left-tailed hypothesis test is not significant at the 0.05 level if the standard score of the sample
mean is less than or equal to z=-1.645
none of the above

45

step-by-step explanation:

to find a percentage, add a decimal in front and multiply it by the other number.

.25 times 180= 45

a precentage of 6th graders. the population is all 6th graders. let me know if i'm wrong, i hope this ! : )

step-by-step explanation:

there are 70 more legs than eyes at the dog show (196 – 126 = 70). dogs have two more legs than eyes, and humans have the same number of legs as eyes. thus 70 is twice the number of dogs at the show, so the number of dogs is half of 70, which is 35. to get the number of humans, subtract 35 from 63: 63 – 35 = 28.

step-by-step explanation: