Statistics and Probability Answers

Which of the following is a parameter in the situation “A machine which has been regulated dispenses an average of 330 ml fruit concentrate per bottle. A random sample of 49 bottles filled by the machine has a mean content of 320 ml and a standard deviation of 50 ml.”?

A machine which has been regulated dispenses an average of 330 ml fruit concentrate per bottle. A random sample of 49 bottles filled by the machine has a mean content of 320 ml and a standard deviation of 50 ml.”?

A machine which has been regulated dispenses an average of 330 ml fruit concentrate per bottle. A random sample of 49 bottles filled by the machine has a mean content of 320 ml and a standard deviation of 50 ml.”?

Shown below are ages (𝑥) and the systolic blood pressures (𝑦) of 9 patients in a certain hospital. Find the regression equation.

Age (𝑥) 26 40 35 50 45 55 28 30 52

Blood pressure (𝑦) 110 140 120 145 130 150 150 125 142

The table below shows the time in hours (𝑥) spent by six (6) students in playing

Clash of Clansand the scores of these students got on a math test. Solve for

Pearson Product Correlation Coeffcient. Construct a Scatter Plot.

𝑥 1 2 3 4 5 6

𝑦 30 25 25 10 15 5

Five items was taken from the output of factory. The length and weight of 5 items are given

below.

Length (meter): 5 6 7 9 12

Weight (KG): 13 15 18 19 20

State which of the two characteristics of two items is more variable?

There is a claim that on daily average, students spend 5.5 hours on social media with a standard deviation of 1.25. A researcher wants to test the claim at 5% level of significance.

1. Formulate the null and alternative hypothesis

2. Determine the test statistic to be used

3. Find the corresponding zvalue

4. Identify the rejection region

In the class of Statistics, there are 75 students in total out of which 55 male, 20 female students. 10 students need to be selected for the occasion of freshers' reception.

a. Determine the probability that 4 of the selected students would be girls by using the formula of binomial distribution.

Which of the following is a parameter in the situation “A machine which has been regulated dispenses an average of 330 ml fruit concentrate per bottle. A random sample of 49 bottles filled by the machine has a mean content of 320 ml and a standard deviation of 50 ml.”?