code: def t(key, df, shape=(), dtype="float64"):
      seed = _get_seed(key)
      n = ivy.random_normal(shape=shape, dtype=dtype, seed=seed)
      half_df = df / 2.0
      g = ivy.gamma(half_df, 1.0, shape=shape, dtype=dtype, seed=seed)
      return n * ivy.sqrt(ivy.divide(half_df, g))
  
imports: import operator
  import ivy
  from ivy.func_wrapper import with_unsupported_dtypes, with_supported_dtypes
  from ivy.functional.frontends.jax.func_wrapper import to_ivy_arrays_and_back, handle_jax_dtype
label_desc: Use image node_id 28 for calling a global function with example usage: t(key, df, shape, dtype) and returns: unknown