Social psychologist notes that the average time a person spends on social media is 2 hours a day. The researcher wants to test whether new parents spend more or less time than 2 hours on social media. She records the following numbers of hours spent on social media and a sample of 15 new parents: 0, 4, 1, 2, 2, 3, 0, 4, 3, 5, 2, 1, 1, 0, 2. (a) Test the hypothesis of whether new parents spend more or less than 2 hours a day on social media using a .05 level of significance. State the value of the test statistic and the decision to retain or reject the null hypothesis

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.

translate k to n and reflect across the line containing jk.

fabric (square meters)                   cloaks

7                                                           21

4/3                                                         4

step-by-step explanation:

we are told that harry needs 2 square meters of fabric for every 6 wizard cloaks he makes.

1. first of all we will find how many cloaks can be made from 1 square meter of fabric by dividing 6 by 2.

we can see that 3 cloaks can be made from 1 square meter of fabric. now we will multiply 3 by 7 to find number of cloaks made from 7 square meters of fabric.

therefore, harry will make 21 cloaks from 7 square meters of fabric.

2. let us find how many square meters of fabric will be needed to make 4 cloaks.

first of all we will find fabric needed for 1 cloak by dividing 2 by 6.

we can see that fabric needed for 1 cloak is   square meter. now we will multiply   by 4 to find fabric needed for 4 cloaks.