Find the Standardized Test Statistic, Z, to Test the Claim $\mathrm { p } _ { 1 } < \mathrm { p } _ { 2 }$

question 122

Multiple Choice

Find the standardized test statistic, z, to test the claim that $\mathrm { p } _ { 1 } < \mathrm { p } _ { 2 }$ Assume the samples are random and independent.
Sample statistics: $\mathrm { n } _ { 1 } = 550 , \mathrm { x } _ { 1 } = 121 , \text { and } \mathrm { n } _ { 2 } = 690 , \mathrm { x } _ { 2 } = 195$

• A)-2.513
• B)-2.132
• C)-0.985
• D)1.116

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Definitions:

Microglia

Phagocytic glial cells found in the CNS.

Ependymal Cells

Glial cells positioned along the brain's ventricles and the spinal cord's central canal, contributing to cerebrospinal fluid generation.

Oligodendrocytes

Glial cells in the central nervous system that produce the myelin sheath around neuronal axons, facilitating electrical conduction.

Myelin Sheaths

Insulating layers around nerves made of lipid and protein, enhancing the speed of electrical signal transmission.