Chegg true, false, or uncertain. in each of the following situations, state whether each statement is true, false, or uncertain, and explain your answer. your score is evaluated on the explanation you provide, therefore, if you do not provide explanation, you will not receive any credit even if you stated true, false, or uncertain correctly. a researcher wants to test h0: x = 30 versus the one sided alternative : x < 30. d. the 95% margin of error for the mean of a normal population with unknown is the same for all srs of size n.

75 tickets have been sold so far.

step-by-step explanation:

in this question it is clearly mentioned that 45 children's tickets have been sold and this number is 60% of the total tickets sold.

now let's assume the total number of tickets sold be x.

then 60% of x = 45

⇒

⇒ x(.6) = 45

by dividing with .6 on both the sides of the equation

⇒ x = 75

therefore 75 tickets have been sold so far.

17

step-by-step explanation:

15% chance.

step-by-step explanation:

3/10 times, the 5 year old will get a tablet. 5/10 times, the 13 yer old will get a tablet. multiply both fractions to get 15/100 times, both would have a tablet.

hi how are you doing today? if you ever need just tell me

step-by-step explanation: