2 Create at 95% confidence interval to estimate the population portion of cell phones with at least one crack on the screen. To do this use the sample of 80 people whose cell phones were checked and 22 had at least one crack. The population data follows a normal distribution. SHOW WORK, meaning complete the formula with the corresponding values, do not just use the build in calculator function. Round your answer to three decimal places or answer as a percent with 1-decimal value.

Q: 10 2 dt √ 4 + t²

A:

Q: O y = |x| 5- 4 1 O y = 3- 2 O y = V¤ а. -5 -4 -3 -2 - 4 5 O y = a? -2 O y = x³ -3 -4 O y = x -5+ 1 2…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: What are parts d-j?

A: As per the guidelines of Bartleby, solution of only first 4 parts are given.The remaining 3 parts…

Q: What are parts h-j?

A: The complete table is              R         L         S        TotalH        140     240     400…

Q: 6. y = x and x = y² 2+ 1.5- 1+ 0.5- 0 -0.5 y = x x = y² 0.5 1 1.5 2 X

A: Given query is to find the area under the curve

Q: raically 7) 2x 3 +16x² = 40x %3D

A: We subtract 40x then factor out GCF 2x.

Q: ind 5(s+2)(5+2)

A: Using method of Partial Fraction.

Q: 1 Express 3 5 3 5 7 = as a linear combination of - 1 + 2 3 4 2 H 1 and 3 4 LO

A:

Q: b) Evaluate ſ, S s,(x² + y² + z²)dxdydz.

A: Integrate with respect to x and plug the limits.

Q: 3. Determine all the units of Z40 and of Z11.

A:

Q: by Gaclening 2.

A:

Q: Compute det B4 where B = det B4 202 2 2 3 222 = (Simplify your answer.)

A: Given query is to find the determinant of the matrix.