If n=29, x¯(x-bar)=35, and s=12, construct a confidence interval at a 95% confidence level. Assume the data came from a normally distributed population. Give your answers to one decimal place.

I'm looking for help on the first 3 bullet points please.

A mean function E(Y IX = x) tells us: the probability of observing the value Y. O whether or not to reject the null hypothesis. how much data we need to collect. how the expected value of Y changes as X varies.

Remaining Time: 1 hour, 28 minutes, 34 seconds. Question Completion Status: 20 30 50 90 100 10 120 130 140 150 6 170 180 190 20 21 A Click Submit to complete this assessment. Question 21 Save and Submit Question 21 of 21 5 points Save Answer Provide an appropriate response. The data below are the final exam scores of 10 randomly selected chemistry students and the number of hours they slept the night before the exam. What is the best predicted value for y given x=3? Hours, x 3 Scores, y 65 5 2 8 2 4 4 5 6 3 80 60 88 66 78 85 90 90 71 O72 O 70 O 71 O 69 جا A Click Submit to complete this assessment. 61°F Sunny RYZEN AND RADEON GRAPHICS 30 ATOMY ANSWE Esc ion AN LEMB tab AK F1 F2 F3 2 # 3 W E % Q Search 8 R Y Question 21 of 21 Save and Submit G H K C Par Hel

Needed help with the last two

Follow the instructions in the given image and write all formulas to do the steps in the Excel.. Please only do the B part

Using the square root of x sign above, you will be able to find symbols and equations.  Subscripts are also at the top.  X2    X2 Now that you have calculated SS. Calculate  variance and standard deviation using  the same distribution of scores from a population.   3, 7, 8, 5, 6, 4, 9, 10, 7, 8, 6, 5

Using your favorite statistics software package, you generate a scatter plot which displays a linear form. You find a regression equation and the standard deviation for both variables. The standard deviation for x is 2.03, and the standard deviation for y is 5.2. The regression equation is reported as - 5.5 + 1.84x What fraction of the variation in y can be explained by the variation in the values of x? (Enter your answer as a decimal between 0 and 1.)

IQ tests supposedly measure our intelligence. They typically are ‘normed’ so that they have a mean of 100 and a standard deviation of 15. (Higher scores show higher intelligence.) Use the graph and use the z-score and percents from columns b and c in Table A, when relevant. If you scored 132, what is your z-score? (Interpret.) Use table A  X, z(a), (b), and (c) X z (a) (b) (c)          and use the graph! Write down or save your response to use in Part 2 of this quiz. Group of answer choices -2.53 z. I'm at the 98.34 percentile rank and 1.66% of people scored smarter than me. 2.13 z. I'm at the 98.34 percentile rank and 1.66% of people scored smarter than me. -2.13 z. I'm at the 1.66 percentile rank and 98.34% of people scored smarter than me. 2.53 z. I'm at the 0.57 percentile rank and 99.43% of people scored smarter than me. 2.13 z. I'm at the 1.66 percentile rank and 98.34% of people scored smarter than me. 2.53 z. I'm at the 99.43 percentile rank…

Follow the instructions in the given image and write all formulas to do the steps in the Excel.. Please only do the D part