The ratio of blue marbles to white marbles simran's bag is equal to 1 to 2. if there are 20 blue marbles how many white marbles are there?

Describe in detail how you would construct a 95% confidence interval for a set of 30 data points whose mean is 20 and population standard deviation is 3. be sure to show that you know the formula and how to plug into it. also, clearly state the margin of error.

Pj is decorating pupcakes for rocky's birthday party. her color scheme is black, purple, and green. she will use this spinner to determine the color of sprinkles on each pupcake. which model shows the probability of randomly landing on each color?

Which inequality comparing two of the expressions is true when 0.7 < x < 0.9